{
  "schema": "aq26_england_network_review_v3",
  "status": "partial_england_network_review",
  "target_area": "England",
  "period_start": "2026-09-12",
  "period_end": "2026-10-11",
  "period_days": 30,
  "period_end_rule": "latest completed source-calendar day with valid evidence in all 9 English regions",
  "regions_with_valid_data_on_period_end": 9,
  "configured_region_count": 9,
  "regions_reporting": 9,
  "region_coverage_percent": 100.0,
  "active_aurn_sites_discovered": 172,
  "configured_target_pollutant_station_count": 143,
  "reporting_station_count": 141,
  "reporting_station_coverage_percent": 98.6,
  "configured_target_stream_count": 332,
  "expected_configured_stream_days": 9960,
  "valid_pollutant_day_observations": 9722,
  "unique_station_days": 4216,
  "valid_station_days": 9722,
  "configured_stream_day_completeness_percent": 97.6,
  "national_publication_ready": false,
  "coverage_contract": {
    "all_nine_english_regions_required": true,
    "minimum_reporting_station_fraction": 0.85,
    "minimum_configured_stream_day_fraction": 0.85,
    "minimum_region_pollutant_stream_day_fraction": 0.8,
    "minimum_stations_for_regional_comparison": 2,
    "fixed_panel_minimum_valid_days": 27,
    "configured_pollutant_streams_are_the_completeness_denominator": true
  },
  "completeness_scope": "valid pollutant-day observations divided by expected pollutant-day observations for every currently configured NO2, PM10 and PM2.5 stream discovered at active English AURN sites",
  "configured_stream_day_completeness_formula": {
    "numerator_key": "valid_pollutant_day_observations",
    "denominator_key": "expected_configured_stream_days",
    "unit": "pollutant-day observations",
    "formula": "100 × valid pollutant-day observations / expected configured pollutant-day observations"
  },
  "pollutant_coverage": [
    {
      "pollutant": "PM2.5",
      "configured_station_streams": 127,
      "configured_regions": 9,
      "expected_pollutant_day_observations": 3810,
      "expected_station_days": 3810,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "valid_pollutant_day_observations": 3713,
      "valid_station_days": 3713,
      "configured_stream_day_completeness_percent": 97.5,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    },
    {
      "pollutant": "PM10",
      "configured_station_streams": 109,
      "configured_regions": 9,
      "expected_pollutant_day_observations": 3270,
      "expected_station_days": 3270,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "valid_pollutant_day_observations": 3182,
      "valid_station_days": 3182,
      "configured_stream_day_completeness_percent": 97.3,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    },
    {
      "pollutant": "NO2",
      "configured_station_streams": 96,
      "configured_regions": 9,
      "expected_pollutant_day_observations": 2880,
      "expected_station_days": 2880,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "valid_pollutant_day_observations": 2827,
      "valid_station_days": 2827,
      "configured_stream_day_completeness_percent": 98.2,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    }
  ],
  "region_pollutant_coverage": [
    {
      "region": "North East",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 360,
      "expected_station_days": 360,
      "valid_pollutant_day_observations": 356,
      "valid_station_days": 356,
      "reporting_stations": 12,
      "completeness_percent": 98.9,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North East",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 300,
      "expected_station_days": 300,
      "valid_pollutant_day_observations": 296,
      "valid_station_days": 296,
      "reporting_stations": 10,
      "completeness_percent": 98.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North East",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 240,
      "expected_station_days": 240,
      "valid_pollutant_day_observations": 216,
      "valid_station_days": 216,
      "reporting_stations": 8,
      "completeness_percent": 90.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 540,
      "expected_station_days": 540,
      "valid_pollutant_day_observations": 533,
      "valid_station_days": 533,
      "reporting_stations": 18,
      "completeness_percent": 98.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 480,
      "expected_station_days": 480,
      "valid_pollutant_day_observations": 471,
      "valid_station_days": 471,
      "reporting_stations": 16,
      "completeness_percent": 98.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 510,
      "expected_station_days": 510,
      "valid_pollutant_day_observations": 503,
      "valid_station_days": 503,
      "reporting_stations": 17,
      "completeness_percent": 98.6,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 570,
      "expected_station_days": 570,
      "valid_pollutant_day_observations": 569,
      "valid_station_days": 569,
      "reporting_stations": 19,
      "completeness_percent": 99.8,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 510,
      "expected_station_days": 510,
      "valid_pollutant_day_observations": 506,
      "valid_station_days": 506,
      "reporting_stations": 17,
      "completeness_percent": 99.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 450,
      "expected_station_days": 450,
      "valid_pollutant_day_observations": 449,
      "valid_station_days": 449,
      "reporting_stations": 15,
      "completeness_percent": 99.8,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 390,
      "expected_station_days": 390,
      "valid_pollutant_day_observations": 384,
      "valid_station_days": 384,
      "reporting_stations": 13,
      "completeness_percent": 98.5,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 330,
      "expected_station_days": 330,
      "valid_pollutant_day_observations": 330,
      "valid_station_days": 330,
      "reporting_stations": 11,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 270,
      "expected_station_days": 270,
      "valid_pollutant_day_observations": 263,
      "valid_station_days": 263,
      "reporting_stations": 9,
      "completeness_percent": 97.4,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 570,
      "expected_station_days": 570,
      "valid_pollutant_day_observations": 565,
      "valid_station_days": 565,
      "reporting_stations": 19,
      "completeness_percent": 99.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "West Midlands",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 540,
      "expected_station_days": 540,
      "valid_pollutant_day_observations": 535,
      "valid_station_days": 535,
      "reporting_stations": 18,
      "completeness_percent": 99.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "West Midlands",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 480,
      "expected_station_days": 480,
      "valid_pollutant_day_observations": 471,
      "valid_station_days": 471,
      "reporting_stations": 16,
      "completeness_percent": 98.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East of England",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 210,
      "expected_station_days": 210,
      "valid_pollutant_day_observations": 150,
      "valid_station_days": 150,
      "reporting_stations": 5,
      "completeness_percent": 71.4,
      "meets_minimum_cell_floor": false,
      "meets_national_stream_threshold": false,
      "coverage_status": "below_minimum_floor"
    },
    {
      "region": "East of England",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 150,
      "expected_station_days": 150,
      "valid_pollutant_day_observations": 120,
      "valid_station_days": 120,
      "reporting_stations": 4,
      "completeness_percent": 80.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": false,
      "coverage_status": "meets_minimum_floor_with_exception"
    },
    {
      "region": "East of England",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 120,
      "expected_station_days": 120,
      "valid_pollutant_day_observations": 120,
      "valid_station_days": 120,
      "reporting_stations": 4,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "London",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 210,
      "expected_station_days": 210,
      "valid_pollutant_day_observations": 208,
      "valid_station_days": 208,
      "reporting_stations": 7,
      "completeness_percent": 99.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "London",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 180,
      "expected_station_days": 180,
      "valid_pollutant_day_observations": 148,
      "valid_station_days": 148,
      "reporting_stations": 5,
      "completeness_percent": 82.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": false,
      "coverage_status": "meets_minimum_floor_with_exception"
    },
    {
      "region": "London",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 120,
      "expected_station_days": 120,
      "valid_pollutant_day_observations": 120,
      "valid_station_days": 120,
      "reporting_stations": 4,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South East",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 540,
      "expected_station_days": 540,
      "valid_pollutant_day_observations": 540,
      "valid_station_days": 540,
      "reporting_stations": 18,
      "completeness_percent": 100.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South East",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 480,
      "expected_station_days": 480,
      "valid_pollutant_day_observations": 478,
      "valid_station_days": 478,
      "reporting_stations": 16,
      "completeness_percent": 99.6,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South East",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 390,
      "expected_station_days": 390,
      "valid_pollutant_day_observations": 387,
      "valid_station_days": 387,
      "reporting_stations": 13,
      "completeness_percent": 99.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South West",
      "pollutant": "PM2.5",
      "expected_pollutant_day_observations": 420,
      "expected_station_days": 420,
      "valid_pollutant_day_observations": 408,
      "valid_station_days": 408,
      "reporting_stations": 14,
      "completeness_percent": 97.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South West",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 300,
      "expected_station_days": 300,
      "valid_pollutant_day_observations": 298,
      "valid_station_days": 298,
      "reporting_stations": 10,
      "completeness_percent": 99.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "South West",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 300,
      "expected_station_days": 300,
      "valid_pollutant_day_observations": 298,
      "valid_station_days": 298,
      "reporting_stations": 10,
      "completeness_percent": 99.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    }
  ],
  "regional_coverage_exceptions": [
    {
      "region": "East of England",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 150,
      "expected_station_days": 150,
      "valid_pollutant_day_observations": 120,
      "valid_station_days": 120,
      "reporting_stations": 4,
      "completeness_percent": 80.0,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": false,
      "coverage_status": "meets_minimum_floor_with_exception"
    },
    {
      "region": "London",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 180,
      "expected_station_days": 180,
      "valid_pollutant_day_observations": 148,
      "valid_station_days": 148,
      "reporting_stations": 5,
      "completeness_percent": 82.2,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": false,
      "coverage_status": "meets_minimum_floor_with_exception"
    }
  ],
  "availability": [
    {
      "region": "North East",
      "active_aurn_sites_discovered": 13,
      "configured_target_pollutant_sites": 12,
      "reporting_stations": 12,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 868,
      "valid_station_days": 868,
      "coverage_status": "reporting"
    },
    {
      "region": "North West",
      "active_aurn_sites_discovered": 24,
      "configured_target_pollutant_sites": 23,
      "reporting_stations": 23,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 1507,
      "valid_station_days": 1507,
      "coverage_status": "reporting"
    },
    {
      "region": "Yorkshire and the Humber",
      "active_aurn_sites_discovered": 21,
      "configured_target_pollutant_sites": 20,
      "reporting_stations": 20,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 1524,
      "valid_station_days": 1524,
      "coverage_status": "reporting"
    },
    {
      "region": "East Midlands",
      "active_aurn_sites_discovered": 17,
      "configured_target_pollutant_sites": 14,
      "reporting_stations": 14,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 977,
      "valid_station_days": 977,
      "coverage_status": "reporting"
    },
    {
      "region": "West Midlands",
      "active_aurn_sites_discovered": 22,
      "configured_target_pollutant_sites": 22,
      "reporting_stations": 22,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 1571,
      "valid_station_days": 1571,
      "coverage_status": "reporting"
    },
    {
      "region": "East of England",
      "active_aurn_sites_discovered": 15,
      "configured_target_pollutant_sites": 8,
      "reporting_stations": 6,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 390,
      "valid_station_days": 390,
      "coverage_status": "reporting"
    },
    {
      "region": "London",
      "active_aurn_sites_discovered": 17,
      "configured_target_pollutant_sites": 7,
      "reporting_stations": 7,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 476,
      "valid_station_days": 476,
      "coverage_status": "reporting"
    },
    {
      "region": "South East",
      "active_aurn_sites_discovered": 24,
      "configured_target_pollutant_sites": 20,
      "reporting_stations": 20,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 1405,
      "valid_station_days": 1405,
      "coverage_status": "reporting"
    },
    {
      "region": "South West",
      "active_aurn_sites_discovered": 19,
      "configured_target_pollutant_sites": 17,
      "reporting_stations": 17,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 1004,
      "valid_station_days": 1004,
      "coverage_status": "reporting"
    }
  ],
  "station_statistics": [
    {
      "region": "East Midlands",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "station_name": "Chesterfield Loundsley Green",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.7,
      "period_median_ug_m3": 5.78,
      "period_p95_daily_mean_ug_m3": 8.74,
      "max_daily_mean_ug_m3": 12.1,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "station_name": "Chesterfield Loundsley Green",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.83,
      "period_median_ug_m3": 7.65,
      "period_p95_daily_mean_ug_m3": 13.76,
      "max_daily_mean_ug_m3": 15.01,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "station_name": "Chesterfield Loundsley Green",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.08,
      "period_median_ug_m3": 3.94,
      "period_p95_daily_mean_ug_m3": 7.98,
      "max_daily_mean_ug_m3": 8.28,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "station_name": "Chesterfield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.77,
      "period_median_ug_m3": 9.82,
      "period_p95_daily_mean_ug_m3": 14.36,
      "max_daily_mean_ug_m3": 19.01,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "station_name": "Chesterfield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.58,
      "period_median_ug_m3": 8.6,
      "period_p95_daily_mean_ug_m3": 14.42,
      "max_daily_mean_ug_m3": 15.99,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "station_name": "Chesterfield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.51,
      "period_median_ug_m3": 4.37,
      "period_p95_daily_mean_ug_m3": 8.41,
      "max_daily_mean_ug_m3": 8.89,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "station_name": "Derby St Alkmund's Way",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 22.37,
      "period_median_ug_m3": 23.02,
      "period_p95_daily_mean_ug_m3": 30.04,
      "max_daily_mean_ug_m3": 34.11,
      "days_above_who_reference": 11
    },
    {
      "region": "East Midlands",
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "station_name": "Derby St Alkmund's Way",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.34,
      "period_median_ug_m3": 5.27,
      "period_p95_daily_mean_ug_m3": 8.66,
      "max_daily_mean_ug_m3": 9.73,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "station_name": "Derby Stockbrook Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.75,
      "period_median_ug_m3": 8.91,
      "period_p95_daily_mean_ug_m3": 14.32,
      "max_daily_mean_ug_m3": 15.29,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "station_name": "Derby Stockbrook Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.88,
      "period_median_ug_m3": 5.02,
      "period_p95_daily_mean_ug_m3": 7.98,
      "max_daily_mean_ug_m3": 9.41,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "station_name": "Leicester University",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.3,
      "period_median_ug_m3": 13.41,
      "period_p95_daily_mean_ug_m3": 29.46,
      "max_daily_mean_ug_m3": 33.3,
      "days_above_who_reference": 2
    },
    {
      "region": "East Midlands",
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "station_name": "Leicester University",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.34,
      "period_median_ug_m3": 8.23,
      "period_p95_daily_mean_ug_m3": 13.31,
      "max_daily_mean_ug_m3": 15.59,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "station_name": "Leicester University",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.66,
      "period_median_ug_m3": 4.5,
      "period_p95_daily_mean_ug_m3": 7.49,
      "max_daily_mean_ug_m3": 11.05,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "station_name": "Leicester A594 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 27.85,
      "period_median_ug_m3": 27.42,
      "period_p95_daily_mean_ug_m3": 41.49,
      "max_daily_mean_ug_m3": 44.64,
      "days_above_who_reference": 17
    },
    {
      "region": "East Midlands",
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "station_name": "Leicester A594 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.71,
      "period_median_ug_m3": 11.59,
      "period_p95_daily_mean_ug_m3": 17.83,
      "max_daily_mean_ug_m3": 19.07,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "station_name": "Leicester A594 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.81,
      "period_median_ug_m3": 5.56,
      "period_p95_daily_mean_ug_m3": 9.49,
      "max_daily_mean_ug_m3": 12.11,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "LIN3",
      "uka_id": "UKA00561",
      "station_name": "Lincoln Canwick Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 18.58,
      "period_median_ug_m3": 18.11,
      "period_p95_daily_mean_ug_m3": 31.92,
      "max_daily_mean_ug_m3": 33.76,
      "days_above_who_reference": 6
    },
    {
      "region": "East Midlands",
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "station_name": "Loughborough Thorpe Acre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.01,
      "period_median_ug_m3": 9.76,
      "period_p95_daily_mean_ug_m3": 16.31,
      "max_daily_mean_ug_m3": 17.2,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "station_name": "Loughborough Thorpe Acre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.11,
      "period_median_ug_m3": 4.88,
      "period_p95_daily_mean_ug_m3": 8.4,
      "max_daily_mean_ug_m3": 10.5,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "station_name": "Mansfield Ladybrook",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.84,
      "period_median_ug_m3": 9.36,
      "period_p95_daily_mean_ug_m3": 14.2,
      "max_daily_mean_ug_m3": 14.94,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "station_name": "Mansfield Ladybrook",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.79,
      "period_median_ug_m3": 4.97,
      "period_p95_daily_mean_ug_m3": 8.17,
      "max_daily_mean_ug_m3": 8.77,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "station_name": "Nottingham Bilborough",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.11,
      "period_median_ug_m3": 8.52,
      "period_p95_daily_mean_ug_m3": 15.36,
      "max_daily_mean_ug_m3": 16.06,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "station_name": "Nottingham Bilborough",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.66,
      "period_median_ug_m3": 4.67,
      "period_p95_daily_mean_ug_m3": 8.02,
      "max_daily_mean_ug_m3": 9.04,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "station_name": "Nottingham Kenmore Gardens",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.23,
      "period_median_ug_m3": 12.85,
      "period_p95_daily_mean_ug_m3": 19.15,
      "max_daily_mean_ug_m3": 22.92,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "station_name": "Nottingham Kenmore Gardens",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.31,
      "period_median_ug_m3": 11.32,
      "period_p95_daily_mean_ug_m3": 17.67,
      "max_daily_mean_ug_m3": 18.82,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "station_name": "Nottingham Kenmore Gardens",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.1,
      "period_median_ug_m3": 6.05,
      "period_p95_daily_mean_ug_m3": 9.98,
      "max_daily_mean_ug_m3": 10.74,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "station_name": "Northampton Spring Park",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.26,
      "period_median_ug_m3": 9.29,
      "period_p95_daily_mean_ug_m3": 16.43,
      "max_daily_mean_ug_m3": 17.54,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "station_name": "Northampton Spring Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 24,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 24,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 4.79,
      "period_median_ug_m3": 4.62,
      "period_p95_daily_mean_ug_m3": 7.58,
      "max_daily_mean_ug_m3": 11.26,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "station_name": "Nottingham Western Boulevard",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 18.96,
      "period_median_ug_m3": 18.59,
      "period_p95_daily_mean_ug_m3": 27.61,
      "max_daily_mean_ug_m3": 30.05,
      "days_above_who_reference": 5
    },
    {
      "region": "East Midlands",
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "station_name": "Nottingham Western Boulevard",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.97,
      "period_median_ug_m3": 11.4,
      "period_p95_daily_mean_ug_m3": 15.72,
      "max_daily_mean_ug_m3": 16.72,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "station_name": "Nottingham Western Boulevard",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.42,
      "period_median_ug_m3": 5.57,
      "period_p95_daily_mean_ug_m3": 8.64,
      "max_daily_mean_ug_m3": 9.45,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "station_name": "Wigston Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.02,
      "period_median_ug_m3": 8.75,
      "period_p95_daily_mean_ug_m3": 14.03,
      "max_daily_mean_ug_m3": 18.45,
      "days_above_who_reference": 0
    },
    {
      "region": "East Midlands",
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "station_name": "Wigston Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.64,
      "period_median_ug_m3": 4.65,
      "period_p95_daily_mean_ug_m3": 7.75,
      "max_daily_mean_ug_m3": 11.95,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "CAM",
      "uka_id": "UKA00396",
      "station_name": "Cambridge Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 20.14,
      "period_median_ug_m3": 18.05,
      "period_p95_daily_mean_ug_m3": 31.06,
      "max_daily_mean_ug_m3": 31.39,
      "days_above_who_reference": 8
    },
    {
      "region": "East of England",
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "station_name": "Cambridge King's Hedges",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.15,
      "period_median_ug_m3": 7.83,
      "period_p95_daily_mean_ug_m3": 14.69,
      "max_daily_mean_ug_m3": 24.41,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "station_name": "Cambridge King's Hedges",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.66,
      "period_median_ug_m3": 3.96,
      "period_p95_daily_mean_ug_m3": 7.66,
      "max_daily_mean_ug_m3": 16.2,
      "days_above_who_reference": 1
    },
    {
      "region": "East of England",
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "station_name": "Luton A505 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 23.23,
      "period_median_ug_m3": 23.01,
      "period_p95_daily_mean_ug_m3": 39.88,
      "max_daily_mean_ug_m3": 48.45,
      "days_above_who_reference": 12
    },
    {
      "region": "East of England",
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "station_name": "Luton A505 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.37,
      "period_median_ug_m3": 4.81,
      "period_p95_daily_mean_ug_m3": 9.24,
      "max_daily_mean_ug_m3": 14.23,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "station_name": "Norwich Lakenfields",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.52,
      "period_median_ug_m3": 7.87,
      "period_p95_daily_mean_ug_m3": 11.47,
      "max_daily_mean_ug_m3": 14.89,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "station_name": "Norwich Lakenfields",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.98,
      "period_median_ug_m3": 7.65,
      "period_p95_daily_mean_ug_m3": 14.68,
      "max_daily_mean_ug_m3": 22.86,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "station_name": "Norwich Lakenfields",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.03,
      "period_median_ug_m3": 4.27,
      "period_p95_daily_mean_ug_m3": 8.24,
      "max_daily_mean_ug_m3": 17.33,
      "days_above_who_reference": 1
    },
    {
      "region": "East of England",
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "station_name": "Peterborough Garton End",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.81,
      "period_median_ug_m3": 10.03,
      "period_p95_daily_mean_ug_m3": 15.75,
      "max_daily_mean_ug_m3": 21.35,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "station_name": "Peterborough Garton End",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.06,
      "period_median_ug_m3": 4.51,
      "period_p95_daily_mean_ug_m3": 8.11,
      "max_daily_mean_ug_m3": 13.03,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "station_name": "Southend-on-Sea",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.9,
      "period_median_ug_m3": 9.2,
      "period_p95_daily_mean_ug_m3": 19.6,
      "max_daily_mean_ug_m3": 29.39,
      "days_above_who_reference": 1
    },
    {
      "region": "East of England",
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "station_name": "Southend-on-Sea",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.15,
      "period_median_ug_m3": 9.22,
      "period_p95_daily_mean_ug_m3": 15.95,
      "max_daily_mean_ug_m3": 31.44,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "station_name": "Southend-on-Sea",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.42,
      "period_median_ug_m3": 4.78,
      "period_p95_daily_mean_ug_m3": 8.27,
      "max_daily_mean_ug_m3": 23.17,
      "days_above_who_reference": 1
    },
    {
      "region": "London",
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "station_name": "London Bloomsbury",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 20.61,
      "period_median_ug_m3": 19.56,
      "period_p95_daily_mean_ug_m3": 34.97,
      "max_daily_mean_ug_m3": 43.04,
      "days_above_who_reference": 7
    },
    {
      "region": "London",
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "station_name": "London Bloomsbury",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.99,
      "period_median_ug_m3": 10.29,
      "period_p95_daily_mean_ug_m3": 17.42,
      "max_daily_mean_ug_m3": 22.89,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "station_name": "London Bloomsbury",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.37,
      "period_median_ug_m3": 5.13,
      "period_p95_daily_mean_ug_m3": 8.66,
      "max_daily_mean_ug_m3": 13.58,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "station_name": "London Hillingdon",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 23.03,
      "period_median_ug_m3": 22.32,
      "period_p95_daily_mean_ug_m3": 35.47,
      "max_daily_mean_ug_m3": 39.13,
      "days_above_who_reference": 13
    },
    {
      "region": "London",
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "station_name": "London Hillingdon",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.41,
      "period_median_ug_m3": 12.11,
      "period_p95_daily_mean_ug_m3": 21.8,
      "max_daily_mean_ug_m3": 22.98,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "station_name": "London Hillingdon",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.7,
      "period_median_ug_m3": 5.94,
      "period_p95_daily_mean_ug_m3": 9.34,
      "max_daily_mean_ug_m3": 11.05,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "station_name": "London Westminster",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.46,
      "period_median_ug_m3": 12.4,
      "period_p95_daily_mean_ug_m3": 27.55,
      "max_daily_mean_ug_m3": 34.69,
      "days_above_who_reference": 5
    },
    {
      "region": "London",
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "station_name": "London Westminster",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.68,
      "period_median_ug_m3": 5.31,
      "period_p95_daily_mean_ug_m3": 9.09,
      "max_daily_mean_ug_m3": 13.2,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "station_name": "London Harlington",
      "environment_type": "Urban Industrial",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 21.02,
      "period_median_ug_m3": 20.51,
      "period_p95_daily_mean_ug_m3": 33.08,
      "max_daily_mean_ug_m3": 37.54,
      "days_above_who_reference": 9
    },
    {
      "region": "London",
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "station_name": "London Harlington",
      "environment_type": "Urban Industrial",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.95,
      "period_median_ug_m3": 8.99,
      "period_p95_daily_mean_ug_m3": 19.05,
      "max_daily_mean_ug_m3": 19.59,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "station_name": "London Harlington",
      "environment_type": "Urban Industrial",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.38,
      "period_median_ug_m3": 4.4,
      "period_p95_daily_mean_ug_m3": 7.13,
      "max_daily_mean_ug_m3": 8.89,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "station_name": "London A406 N Circular",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.35,
      "period_median_ug_m3": 6.02,
      "period_p95_daily_mean_ug_m3": 10.02,
      "max_daily_mean_ug_m3": 18.46,
      "days_above_who_reference": 1
    },
    {
      "region": "London",
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "station_name": "London Norbury Manor School",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.59,
      "period_median_ug_m3": 9.93,
      "period_p95_daily_mean_ug_m3": 15.8,
      "max_daily_mean_ug_m3": 17.02,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "station_name": "London Norbury Manor School",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.26,
      "period_median_ug_m3": 4.94,
      "period_p95_daily_mean_ug_m3": 9.02,
      "max_daily_mean_ug_m3": 10.34,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "station_name": "London Teddington Bushy Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.59,
      "period_median_ug_m3": 8.61,
      "period_p95_daily_mean_ug_m3": 15.33,
      "max_daily_mean_ug_m3": 16.19,
      "days_above_who_reference": 0
    },
    {
      "region": "London",
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "station_name": "London Teddington Bushy Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.58,
      "period_median_ug_m3": 3.95,
      "period_p95_daily_mean_ug_m3": 8.12,
      "max_daily_mean_ug_m3": 9.17,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "station_name": "Ashington Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.95,
      "period_median_ug_m3": 7.65,
      "period_p95_daily_mean_ug_m3": 12.84,
      "max_daily_mean_ug_m3": 19.92,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "station_name": "Ashington Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.36,
      "period_median_ug_m3": 4.18,
      "period_p95_daily_mean_ug_m3": 8.29,
      "max_daily_mean_ug_m3": 13.7,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "station_name": "Darlington Firthmoor",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.1,
      "period_median_ug_m3": 8.4,
      "period_p95_daily_mean_ug_m3": 13.32,
      "max_daily_mean_ug_m3": 14.83,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "station_name": "Darlington Firthmoor",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.56,
      "period_median_ug_m3": 4.51,
      "period_p95_daily_mean_ug_m3": 8.3,
      "max_daily_mean_ug_m3": 10.23,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "station_name": "Stockton-on-Tees Eaglescliffe",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.95,
      "period_median_ug_m3": 5.2,
      "period_p95_daily_mean_ug_m3": 12.62,
      "max_daily_mean_ug_m3": 17.24,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "station_name": "Stockton-on-Tees Eaglescliffe",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.62,
      "period_median_ug_m3": 10.69,
      "period_p95_daily_mean_ug_m3": 15.55,
      "max_daily_mean_ug_m3": 17.11,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "station_name": "Stockton-on-Tees Eaglescliffe",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.97,
      "period_median_ug_m3": 5.84,
      "period_p95_daily_mean_ug_m3": 8.72,
      "max_daily_mean_ug_m3": 9.33,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "station_name": "Hartlepool St Abbs Walk",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.79,
      "period_median_ug_m3": 8.03,
      "period_p95_daily_mean_ug_m3": 12.46,
      "max_daily_mean_ug_m3": 13.87,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "station_name": "Hartlepool St Abbs Walk",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 26,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 26,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 9.52,
      "period_median_ug_m3": 8.98,
      "period_p95_daily_mean_ug_m3": 19.19,
      "max_daily_mean_ug_m3": 23.69,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "station_name": "Hartlepool St Abbs Walk",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 26,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 26,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.05,
      "period_median_ug_m3": 4.8,
      "period_p95_daily_mean_ug_m3": 10.41,
      "max_daily_mean_ug_m3": 11.61,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "MID",
      "uka_id": "UKA00220",
      "station_name": "Middlesbrough",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.89,
      "period_median_ug_m3": 7.69,
      "period_p95_daily_mean_ug_m3": 14.74,
      "max_daily_mean_ug_m3": 15.44,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "MID",
      "uka_id": "UKA00220",
      "station_name": "Middlesbrough",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.43,
      "period_median_ug_m3": 11.03,
      "period_p95_daily_mean_ug_m3": 14.74,
      "max_daily_mean_ug_m3": 15.98,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "MID",
      "uka_id": "UKA00220",
      "station_name": "Middlesbrough",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.4,
      "period_median_ug_m3": 4.56,
      "period_p95_daily_mean_ug_m3": 7.93,
      "max_daily_mean_ug_m3": 10.58,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "station_name": "Newcastle Cradlewell Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 26.7,
      "period_median_ug_m3": 28.49,
      "period_p95_daily_mean_ug_m3": 41.71,
      "max_daily_mean_ug_m3": 43.66,
      "days_above_who_reference": 15
    },
    {
      "region": "North East",
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "station_name": "Newcastle Cradlewell Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.63,
      "period_median_ug_m3": 9.39,
      "period_p95_daily_mean_ug_m3": 14.74,
      "max_daily_mean_ug_m3": 19.05,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "station_name": "Newcastle Cradlewell Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.88,
      "period_median_ug_m3": 4.55,
      "period_p95_daily_mean_ug_m3": 9.53,
      "max_daily_mean_ug_m3": 12.34,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "station_name": "Newcastle Centre",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.06,
      "period_median_ug_m3": 14.56,
      "period_p95_daily_mean_ug_m3": 22.23,
      "max_daily_mean_ug_m3": 23.48,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "station_name": "Newcastle Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.77,
      "period_median_ug_m3": 10.73,
      "period_p95_daily_mean_ug_m3": 16.52,
      "max_daily_mean_ug_m3": 16.89,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "station_name": "Newcastle Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.17,
      "period_median_ug_m3": 6.0,
      "period_p95_daily_mean_ug_m3": 10.0,
      "max_daily_mean_ug_m3": 12.0,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "station_name": "North Shields Chirton",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.83,
      "period_median_ug_m3": 7.99,
      "period_p95_daily_mean_ug_m3": 11.91,
      "max_daily_mean_ug_m3": 17.6,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "station_name": "North Shields Chirton",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.57,
      "period_median_ug_m3": 4.51,
      "period_p95_daily_mean_ug_m3": 8.43,
      "max_daily_mean_ug_m3": 12.41,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "station_name": "Redcar Milford Walk",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.13,
      "period_median_ug_m3": 9.28,
      "period_p95_daily_mean_ug_m3": 13.34,
      "max_daily_mean_ug_m3": 15.47,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "station_name": "Redcar Milford Walk",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.39,
      "period_median_ug_m3": 4.25,
      "period_p95_daily_mean_ug_m3": 8.04,
      "max_daily_mean_ug_m3": 10.16,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "station_name": "Stockton-on-Tees A1305 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.47,
      "period_median_ug_m3": 7.92,
      "period_p95_daily_mean_ug_m3": 17.87,
      "max_daily_mean_ug_m3": 25.64,
      "days_above_who_reference": 1
    },
    {
      "region": "North East",
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "station_name": "Stockton-on-Tees A1305 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.52,
      "period_median_ug_m3": 5.4,
      "period_p95_daily_mean_ug_m3": 8.98,
      "max_daily_mean_ug_m3": 9.87,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "station_name": "Sunderland Silksworth",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 16,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 16,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 7.41,
      "period_median_ug_m3": 7.3,
      "period_p95_daily_mean_ug_m3": 15.61,
      "max_daily_mean_ug_m3": 15.67,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "station_name": "Sunderland Silksworth",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.66,
      "period_median_ug_m3": 8.49,
      "period_p95_daily_mean_ug_m3": 14.38,
      "max_daily_mean_ug_m3": 17.58,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "station_name": "Sunderland Silksworth",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.4,
      "period_median_ug_m3": 4.24,
      "period_p95_daily_mean_ug_m3": 8.03,
      "max_daily_mean_ug_m3": 11.24,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "station_name": "Sunderland Wessington Way",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.58,
      "period_median_ug_m3": 10.52,
      "period_p95_daily_mean_ug_m3": 19.58,
      "max_daily_mean_ug_m3": 21.19,
      "days_above_who_reference": 0
    },
    {
      "region": "North East",
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "station_name": "Sunderland Wessington Way",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.4,
      "period_median_ug_m3": 4.07,
      "period_p95_daily_mean_ug_m3": 8.93,
      "max_daily_mean_ug_m3": 11.41,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "station_name": "Birkenhead Borough Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.66,
      "period_median_ug_m3": 9.86,
      "period_p95_daily_mean_ug_m3": 24.09,
      "max_daily_mean_ug_m3": 26.51,
      "days_above_who_reference": 2
    },
    {
      "region": "North West",
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "station_name": "Birkenhead Borough Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.43,
      "period_median_ug_m3": 5.08,
      "period_p95_daily_mean_ug_m3": 8.11,
      "max_daily_mean_ug_m3": 18.67,
      "days_above_who_reference": 1
    },
    {
      "region": "North West",
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "station_name": "Blackburn Audley Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.29,
      "period_median_ug_m3": 9.48,
      "period_p95_daily_mean_ug_m3": 14.57,
      "max_daily_mean_ug_m3": 15.48,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "station_name": "Blackburn Audley Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.05,
      "period_median_ug_m3": 4.92,
      "period_p95_daily_mean_ug_m3": 7.83,
      "max_daily_mean_ug_m3": 10.93,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BLAR",
      "uka_id": "UKA00590",
      "station_name": "Blackburn Accrington Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.42,
      "period_median_ug_m3": 14.26,
      "period_p95_daily_mean_ug_m3": 24.69,
      "max_daily_mean_ug_m3": 27.07,
      "days_above_who_reference": 1
    },
    {
      "region": "North West",
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "station_name": "Blackpool Marton",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 24,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 24,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 6.19,
      "period_median_ug_m3": 5.17,
      "period_p95_daily_mean_ug_m3": 11.92,
      "max_daily_mean_ug_m3": 12.52,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "station_name": "Blackpool Marton",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.57,
      "period_median_ug_m3": 10.92,
      "period_p95_daily_mean_ug_m3": 17.42,
      "max_daily_mean_ug_m3": 22.23,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "station_name": "Blackpool Marton",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.66,
      "period_median_ug_m3": 5.71,
      "period_p95_daily_mean_ug_m3": 9.12,
      "max_daily_mean_ug_m3": 10.85,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BLWD",
      "uka_id": "UKA01049",
      "station_name": "Blackpool Whitegate Drive",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.61,
      "period_median_ug_m3": 6.35,
      "period_p95_daily_mean_ug_m3": 9.97,
      "max_daily_mean_ug_m3": 13.2,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "station_name": "Bury Whitefield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.31,
      "period_median_ug_m3": 14.63,
      "period_p95_daily_mean_ug_m3": 22.56,
      "max_daily_mean_ug_m3": 23.65,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "station_name": "Bury Whitefield Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.34,
      "period_median_ug_m3": 11.29,
      "period_p95_daily_mean_ug_m3": 16.92,
      "max_daily_mean_ug_m3": 18.05,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "station_name": "Carlisle Morton A595",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.13,
      "period_median_ug_m3": 5.91,
      "period_p95_daily_mean_ug_m3": 11.51,
      "max_daily_mean_ug_m3": 14.73,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "station_name": "Carlisle Morton A595",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.91,
      "period_median_ug_m3": 9.86,
      "period_p95_daily_mean_ug_m3": 15.64,
      "max_daily_mean_ug_m3": 18.2,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "station_name": "Carlisle Morton A595",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.9,
      "period_median_ug_m3": 7.85,
      "period_p95_daily_mean_ug_m3": 10.74,
      "max_daily_mean_ug_m3": 11.36,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "station_name": "Crewe Coppenhall",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.64,
      "period_median_ug_m3": 7.24,
      "period_p95_daily_mean_ug_m3": 12.82,
      "max_daily_mean_ug_m3": 14.88,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "station_name": "Crewe Coppenhall",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.34,
      "period_median_ug_m3": 7.94,
      "period_p95_daily_mean_ug_m3": 13.66,
      "max_daily_mean_ug_m3": 13.76,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "station_name": "Crewe Coppenhall",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.5,
      "period_median_ug_m3": 4.27,
      "period_p95_daily_mean_ug_m3": 8.13,
      "max_daily_mean_ug_m3": 9.19,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "CW",
      "uka_id": "UKA00579",
      "station_name": "Shaw Crompton Way",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.07,
      "period_median_ug_m3": 14.43,
      "period_p95_daily_mean_ug_m3": 24.8,
      "max_daily_mean_ug_m3": 27.89,
      "days_above_who_reference": 2
    },
    {
      "region": "North West",
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "station_name": "Salford Eccles",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.53,
      "period_median_ug_m3": 13.56,
      "period_p95_daily_mean_ug_m3": 22.93,
      "max_daily_mean_ug_m3": 23.4,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "station_name": "Salford Eccles",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.78,
      "period_median_ug_m3": 11.34,
      "period_p95_daily_mean_ug_m3": 18.0,
      "max_daily_mean_ug_m3": 18.66,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "station_name": "Salford Eccles",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.81,
      "period_median_ug_m3": 5.69,
      "period_p95_daily_mean_ug_m3": 10.18,
      "max_daily_mean_ug_m3": 11.18,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "station_name": "Liverpool Speke",
      "environment_type": "Urban Industrial",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.2,
      "period_median_ug_m3": 9.05,
      "period_p95_daily_mean_ug_m3": 18.24,
      "max_daily_mean_ug_m3": 27.01,
      "days_above_who_reference": 1
    },
    {
      "region": "North West",
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "station_name": "Liverpool Speke",
      "environment_type": "Urban Industrial",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.58,
      "period_median_ug_m3": 12.24,
      "period_p95_daily_mean_ug_m3": 19.6,
      "max_daily_mean_ug_m3": 26.93,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "station_name": "Liverpool Speke",
      "environment_type": "Urban Industrial",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.41,
      "period_median_ug_m3": 6.04,
      "period_p95_daily_mean_ug_m3": 9.75,
      "max_daily_mean_ug_m3": 21.54,
      "days_above_who_reference": 1
    },
    {
      "region": "North West",
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "station_name": "Liverpool Thirlmere Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.39,
      "period_median_ug_m3": 8.75,
      "period_p95_daily_mean_ug_m3": 14.16,
      "max_daily_mean_ug_m3": 22.43,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "station_name": "Liverpool Thirlmere Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.01,
      "period_median_ug_m3": 4.72,
      "period_p95_daily_mean_ug_m3": 7.37,
      "max_daily_mean_ug_m3": 16.15,
      "days_above_who_reference": 1
    },
    {
      "region": "North West",
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "station_name": "Manchester Sharston",
      "environment_type": "Suburban Industrial",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.21,
      "period_median_ug_m3": 11.26,
      "period_p95_daily_mean_ug_m3": 16.79,
      "max_daily_mean_ug_m3": 21.98,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "station_name": "Manchester Sharston",
      "environment_type": "Suburban Industrial",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.05,
      "period_median_ug_m3": 8.86,
      "period_p95_daily_mean_ug_m3": 14.81,
      "max_daily_mean_ug_m3": 16.31,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "station_name": "Manchester Sharston",
      "environment_type": "Suburban Industrial",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.73,
      "period_median_ug_m3": 4.54,
      "period_p95_daily_mean_ug_m3": 8.97,
      "max_daily_mean_ug_m3": 10.97,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "station_name": "Manchester Piccadilly",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 18.62,
      "period_median_ug_m3": 18.44,
      "period_p95_daily_mean_ug_m3": 29.4,
      "max_daily_mean_ug_m3": 31.05,
      "days_above_who_reference": 5
    },
    {
      "region": "North West",
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "station_name": "Manchester Piccadilly",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.0,
      "period_median_ug_m3": 13.89,
      "period_p95_daily_mean_ug_m3": 24.18,
      "max_daily_mean_ug_m3": 25.84,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "station_name": "Manchester Piccadilly",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.15,
      "period_median_ug_m3": 6.87,
      "period_p95_daily_mean_ug_m3": 12.32,
      "max_daily_mean_ug_m3": 12.95,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "MIMW",
      "uka_id": "UKA01051",
      "station_name": "Middlewich St Michael's Way",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.22,
      "period_median_ug_m3": 4.97,
      "period_p95_daily_mean_ug_m3": 9.52,
      "max_daily_mean_ug_m3": 11.26,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "station_name": "Preston",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.93,
      "period_median_ug_m3": 9.42,
      "period_p95_daily_mean_ug_m3": 17.81,
      "max_daily_mean_ug_m3": 23.23,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "station_name": "Preston",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.52,
      "period_median_ug_m3": 11.24,
      "period_p95_daily_mean_ug_m3": 16.23,
      "max_daily_mean_ug_m3": 16.79,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "station_name": "Preston",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.49,
      "period_median_ug_m3": 5.37,
      "period_p95_daily_mean_ug_m3": 8.19,
      "max_daily_mean_ug_m3": 11.46,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "station_name": "Rochdale Belfield",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.99,
      "period_median_ug_m3": 9.96,
      "period_p95_daily_mean_ug_m3": 15.99,
      "max_daily_mean_ug_m3": 17.52,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "station_name": "Rochdale Belfield",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.53,
      "period_median_ug_m3": 5.14,
      "period_p95_daily_mean_ug_m3": 9.95,
      "max_daily_mean_ug_m3": 10.41,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "station_name": "St Helens Linkway",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 16.8,
      "period_median_ug_m3": 15.83,
      "period_p95_daily_mean_ug_m3": 27.53,
      "max_daily_mean_ug_m3": 31.26,
      "days_above_who_reference": 3
    },
    {
      "region": "North West",
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "station_name": "St Helens Linkway",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.5,
      "period_median_ug_m3": 12.88,
      "period_p95_daily_mean_ug_m3": 20.33,
      "max_daily_mean_ug_m3": 22.83,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "TAMM",
      "uka_id": "UKA01099",
      "station_name": "Tameside A635 Manchester Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.13,
      "period_median_ug_m3": 6.06,
      "period_p95_daily_mean_ug_m3": 10.63,
      "max_daily_mean_ug_m3": 12.61,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "station_name": "Wirral Tranmere",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.41,
      "period_median_ug_m3": 6.52,
      "period_p95_daily_mean_ug_m3": 17.39,
      "max_daily_mean_ug_m3": 24.27,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "station_name": "Wirral Tranmere",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.18,
      "period_median_ug_m3": 8.42,
      "period_p95_daily_mean_ug_m3": 14.63,
      "max_daily_mean_ug_m3": 23.64,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "station_name": "Wirral Tranmere",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.92,
      "period_median_ug_m3": 4.53,
      "period_p95_daily_mean_ug_m3": 7.56,
      "max_daily_mean_ug_m3": 17.96,
      "days_above_who_reference": 1
    },
    {
      "region": "North West",
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "station_name": "Warrington St. Peter's Park",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.8,
      "period_median_ug_m3": 12.7,
      "period_p95_daily_mean_ug_m3": 18.63,
      "max_daily_mean_ug_m3": 21.05,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "station_name": "Warrington St. Peter's Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 9.74,
      "period_median_ug_m3": 9.53,
      "period_p95_daily_mean_ug_m3": 14.57,
      "max_daily_mean_ug_m3": 15.84,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "station_name": "Warrington St. Peter's Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 4.96,
      "period_median_ug_m3": 4.85,
      "period_p95_daily_mean_ug_m3": 8.7,
      "max_daily_mean_ug_m3": 9.6,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "station_name": "Wigan Centre",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.1,
      "period_median_ug_m3": 10.59,
      "period_p95_daily_mean_ug_m3": 20.21,
      "max_daily_mean_ug_m3": 21.55,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "station_name": "Wigan Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.03,
      "period_median_ug_m3": 11.54,
      "period_p95_daily_mean_ug_m3": 18.94,
      "max_daily_mean_ug_m3": 22.14,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "station_name": "Wigan Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.07,
      "period_median_ug_m3": 5.83,
      "period_p95_daily_mean_ug_m3": 9.37,
      "max_daily_mean_ug_m3": 14.05,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "WSMR",
      "uka_id": "UKA00603",
      "station_name": "Widnes Milton Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 19.68,
      "period_median_ug_m3": 20.11,
      "period_p95_daily_mean_ug_m3": 32.01,
      "max_daily_mean_ug_m3": 36.53,
      "days_above_who_reference": 6
    },
    {
      "region": "South East",
      "station_code": "AYLA",
      "uka_id": "UKA01109",
      "station_name": "Aylesbury A4157",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.4,
      "period_median_ug_m3": 3.83,
      "period_p95_daily_mean_ug_m3": 8.09,
      "max_daily_mean_ug_m3": 9.33,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "station_name": "Brighton Preston Park",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.87,
      "period_median_ug_m3": 8.82,
      "period_p95_daily_mean_ug_m3": 17.8,
      "max_daily_mean_ug_m3": 19.47,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "station_name": "Brighton Preston Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.89,
      "period_median_ug_m3": 8.87,
      "period_p95_daily_mean_ug_m3": 16.76,
      "max_daily_mean_ug_m3": 18.72,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "station_name": "Brighton Preston Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.34,
      "period_median_ug_m3": 4.81,
      "period_p95_daily_mean_ug_m3": 10.23,
      "max_daily_mean_ug_m3": 10.71,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "station_name": "Chatham Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 16.13,
      "period_median_ug_m3": 15.88,
      "period_p95_daily_mean_ug_m3": 22.39,
      "max_daily_mean_ug_m3": 23.73,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "station_name": "Chatham Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.96,
      "period_median_ug_m3": 14.05,
      "period_p95_daily_mean_ug_m3": 21.41,
      "max_daily_mean_ug_m3": 22.46,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "station_name": "Chatham Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.8,
      "period_median_ug_m3": 5.26,
      "period_p95_daily_mean_ug_m3": 10.23,
      "max_daily_mean_ug_m3": 13.52,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "EB",
      "uka_id": "UKA00546",
      "station_name": "Eastbourne",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.93,
      "period_median_ug_m3": 6.44,
      "period_p95_daily_mean_ug_m3": 12.25,
      "max_daily_mean_ug_m3": 15.46,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "EB",
      "uka_id": "UKA00546",
      "station_name": "Eastbourne",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.34,
      "period_median_ug_m3": 8.6,
      "period_p95_daily_mean_ug_m3": 15.41,
      "max_daily_mean_ug_m3": 20.14,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "EB",
      "uka_id": "UKA00546",
      "station_name": "Eastbourne",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.35,
      "period_median_ug_m3": 5.02,
      "period_p95_daily_mean_ug_m3": 9.99,
      "max_daily_mean_ug_m3": 13.88,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "station_name": "Farnborough Cherrywood",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.65,
      "period_median_ug_m3": 7.69,
      "period_p95_daily_mean_ug_m3": 14.1,
      "max_daily_mean_ug_m3": 17.27,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "station_name": "Farnborough Cherrywood",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.87,
      "period_median_ug_m3": 4.52,
      "period_p95_daily_mean_ug_m3": 8.44,
      "max_daily_mean_ug_m3": 9.96,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "station_name": "Maidstone Upper Stone Street",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.79,
      "period_median_ug_m3": 12.67,
      "period_p95_daily_mean_ug_m3": 19.74,
      "max_daily_mean_ug_m3": 21.92,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "station_name": "Maidstone Upper Stone Street",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.51,
      "period_median_ug_m3": 5.98,
      "period_p95_daily_mean_ug_m3": 9.33,
      "max_daily_mean_ug_m3": 13.69,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "station_name": "Milton Keynes Civic Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.78,
      "period_median_ug_m3": 7.62,
      "period_p95_daily_mean_ug_m3": 15.21,
      "max_daily_mean_ug_m3": 19.52,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "station_name": "Milton Keynes Civic Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.48,
      "period_median_ug_m3": 3.75,
      "period_p95_daily_mean_ug_m3": 8.2,
      "max_daily_mean_ug_m3": 12.48,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "OX",
      "uka_id": "UKA00258",
      "station_name": "Oxford Centre Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.21,
      "period_median_ug_m3": 12.86,
      "period_p95_daily_mean_ug_m3": 25.41,
      "max_daily_mean_ug_m3": 29.96,
      "days_above_who_reference": 3
    },
    {
      "region": "South East",
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "station_name": "Oxford St Ebbes",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.27,
      "period_median_ug_m3": 10.03,
      "period_p95_daily_mean_ug_m3": 19.33,
      "max_daily_mean_ug_m3": 22.77,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "station_name": "Oxford St Ebbes",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.11,
      "period_median_ug_m3": 6.59,
      "period_p95_daily_mean_ug_m3": 12.03,
      "max_daily_mean_ug_m3": 14.72,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "station_name": "Oxford St Ebbes",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 3.57,
      "period_median_ug_m3": 3.32,
      "period_p95_daily_mean_ug_m3": 6.62,
      "max_daily_mean_ug_m3": 8.18,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "station_name": "Portsmouth",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.92,
      "period_median_ug_m3": 11.07,
      "period_p95_daily_mean_ug_m3": 23.36,
      "max_daily_mean_ug_m3": 28.0,
      "days_above_who_reference": 2
    },
    {
      "region": "South East",
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "station_name": "Portsmouth",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.14,
      "period_median_ug_m3": 8.15,
      "period_p95_daily_mean_ug_m3": 15.79,
      "max_daily_mean_ug_m3": 18.24,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "station_name": "Portsmouth",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.63,
      "period_median_ug_m3": 4.4,
      "period_p95_daily_mean_ug_m3": 7.72,
      "max_daily_mean_ug_m3": 9.59,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "station_name": "Portsmouth Anglesea Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 18.6,
      "period_median_ug_m3": 17.85,
      "period_p95_daily_mean_ug_m3": 27.77,
      "max_daily_mean_ug_m3": 30.01,
      "days_above_who_reference": 4
    },
    {
      "region": "South East",
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "station_name": "Portsmouth Anglesea Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.76,
      "period_median_ug_m3": 9.62,
      "period_p95_daily_mean_ug_m3": 24.96,
      "max_daily_mean_ug_m3": 36.64,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "station_name": "Portsmouth Anglesea Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.01,
      "period_median_ug_m3": 5.1,
      "period_p95_daily_mean_ug_m3": 12.44,
      "max_daily_mean_ug_m3": 18.95,
      "days_above_who_reference": 1
    },
    {
      "region": "South East",
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "station_name": "Reading New Town",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.45,
      "period_median_ug_m3": 8.84,
      "period_p95_daily_mean_ug_m3": 16.2,
      "max_daily_mean_ug_m3": 20.65,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "station_name": "Reading New Town",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.07,
      "period_median_ug_m3": 7.2,
      "period_p95_daily_mean_ug_m3": 13.76,
      "max_daily_mean_ug_m3": 15.45,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "station_name": "Reading New Town",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.28,
      "period_median_ug_m3": 3.61,
      "period_p95_daily_mean_ug_m3": 7.78,
      "max_daily_mean_ug_m3": 8.99,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "station_name": "Reading London Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.22,
      "period_median_ug_m3": 13.82,
      "period_p95_daily_mean_ug_m3": 24.61,
      "max_daily_mean_ug_m3": 27.11,
      "days_above_who_reference": 2
    },
    {
      "region": "South East",
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "station_name": "Reading London Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.79,
      "period_median_ug_m3": 13.58,
      "period_p95_daily_mean_ug_m3": 18.7,
      "max_daily_mean_ug_m3": 22.31,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "RRKL",
      "uka_id": "UKA01053",
      "station_name": "Reading Rose Kiln Lane",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.19,
      "period_median_ug_m3": 3.78,
      "period_p95_daily_mean_ug_m3": 7.54,
      "max_daily_mean_ug_m3": 9.1,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "station_name": "Southampton A33",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 22.17,
      "period_median_ug_m3": 20.47,
      "period_p95_daily_mean_ug_m3": 34.97,
      "max_daily_mean_ug_m3": 38.98,
      "days_above_who_reference": 10
    },
    {
      "region": "South East",
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "station_name": "Southampton A33",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.22,
      "period_median_ug_m3": 9.05,
      "period_p95_daily_mean_ug_m3": 17.03,
      "max_daily_mean_ug_m3": 21.55,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "station_name": "Southampton A33",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.99,
      "period_median_ug_m3": 4.7,
      "period_p95_daily_mean_ug_m3": 8.57,
      "max_daily_mean_ug_m3": 10.61,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "station_name": "Slough Windmill Bath Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.6,
      "period_median_ug_m3": 12.04,
      "period_p95_daily_mean_ug_m3": 18.26,
      "max_daily_mean_ug_m3": 20.8,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "station_name": "Slough Windmill Bath Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.38,
      "period_median_ug_m3": 5.02,
      "period_p95_daily_mean_ug_m3": 8.78,
      "max_daily_mean_ug_m3": 10.39,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "station_name": "Southampton Centre",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 20.18,
      "period_median_ug_m3": 19.83,
      "period_p95_daily_mean_ug_m3": 31.8,
      "max_daily_mean_ug_m3": 35.09,
      "days_above_who_reference": 6
    },
    {
      "region": "South East",
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "station_name": "Southampton Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.8,
      "period_median_ug_m3": 9.74,
      "period_p95_daily_mean_ug_m3": 17.7,
      "max_daily_mean_ug_m3": 21.31,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "station_name": "Southampton Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.75,
      "period_median_ug_m3": 5.3,
      "period_p95_daily_mean_ug_m3": 9.52,
      "max_daily_mean_ug_m3": 11.08,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "station_name": "Storrington Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.28,
      "period_median_ug_m3": 15.45,
      "period_p95_daily_mean_ug_m3": 20.48,
      "max_daily_mean_ug_m3": 22.5,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "station_name": "Storrington Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.25,
      "period_median_ug_m3": 9.44,
      "period_p95_daily_mean_ug_m3": 17.92,
      "max_daily_mean_ug_m3": 20.23,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "station_name": "Storrington Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.34,
      "period_median_ug_m3": 4.87,
      "period_p95_daily_mean_ug_m3": 9.62,
      "max_daily_mean_ug_m3": 11.41,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "station_name": "Worthing East Ten Acres",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.21,
      "period_median_ug_m3": 9.42,
      "period_p95_daily_mean_ug_m3": 17.79,
      "max_daily_mean_ug_m3": 20.72,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "station_name": "Worthing East Ten Acres",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.41,
      "period_median_ug_m3": 4.74,
      "period_p95_daily_mean_ug_m3": 9.33,
      "max_daily_mean_ug_m3": 12.53,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "station_name": "Worthing A27 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 17.5,
      "period_median_ug_m3": 17.71,
      "period_p95_daily_mean_ug_m3": 21.92,
      "max_daily_mean_ug_m3": 22.83,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "station_name": "Worthing A27 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.23,
      "period_median_ug_m3": 5.83,
      "period_p95_daily_mean_ug_m3": 9.75,
      "max_daily_mean_ug_m3": 12.25,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BHA4",
      "uka_id": "UKA00660",
      "station_name": "Bath A4 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.72,
      "period_median_ug_m3": 14.82,
      "period_p95_daily_mean_ug_m3": 22.29,
      "max_daily_mean_ug_m3": 23.45,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "station_name": "Bournemouth Bourne Valley",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.16,
      "period_median_ug_m3": 9.25,
      "period_p95_daily_mean_ug_m3": 16.21,
      "max_daily_mean_ug_m3": 21.41,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "station_name": "Bournemouth Bourne Valley",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.39,
      "period_median_ug_m3": 5.03,
      "period_p95_daily_mean_ug_m3": 8.85,
      "max_daily_mean_ug_m3": 11.12,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "station_name": "Bournemouth",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.26,
      "period_median_ug_m3": 6.58,
      "period_p95_daily_mean_ug_m3": 13.14,
      "max_daily_mean_ug_m3": 15.8,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "station_name": "Bournemouth",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.51,
      "period_median_ug_m3": 5.84,
      "period_p95_daily_mean_ug_m3": 7.7,
      "max_daily_mean_ug_m3": 9.01,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "station_name": "Barnstaple A39",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.63,
      "period_median_ug_m3": 8.61,
      "period_p95_daily_mean_ug_m3": 14.63,
      "max_daily_mean_ug_m3": 21.52,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "station_name": "Barnstaple A39",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.04,
      "period_median_ug_m3": 4.08,
      "period_p95_daily_mean_ug_m3": 7.49,
      "max_daily_mean_ug_m3": 11.02,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "station_name": "Bristol Temple Way",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 18.84,
      "period_median_ug_m3": 19.97,
      "period_p95_daily_mean_ug_m3": 28.68,
      "max_daily_mean_ug_m3": 29.84,
      "days_above_who_reference": 7
    },
    {
      "region": "South West",
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "station_name": "Bristol Temple Way",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.03,
      "period_median_ug_m3": 10.71,
      "period_p95_daily_mean_ug_m3": 18.23,
      "max_daily_mean_ug_m3": 23.32,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "station_name": "Bristol Temple Way",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.28,
      "period_median_ug_m3": 5.02,
      "period_p95_daily_mean_ug_m3": 9.1,
      "max_daily_mean_ug_m3": 11.85,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BRIW",
      "uka_id": "UKA01120",
      "station_name": "Bridgwater A372 Westonzoyland",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.75,
      "period_median_ug_m3": 4.49,
      "period_p95_daily_mean_ug_m3": 8.59,
      "max_daily_mean_ug_m3": 10.53,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "station_name": "Bristol St Paul's",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.7,
      "period_median_ug_m3": 11.58,
      "period_p95_daily_mean_ug_m3": 22.27,
      "max_daily_mean_ug_m3": 25.29,
      "days_above_who_reference": 1
    },
    {
      "region": "South West",
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "station_name": "Bristol St Paul's",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.06,
      "period_median_ug_m3": 11.57,
      "period_p95_daily_mean_ug_m3": 20.98,
      "max_daily_mean_ug_m3": 26.85,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "station_name": "Bristol St Paul's",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 24,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 24,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.32,
      "period_median_ug_m3": 4.96,
      "period_p95_daily_mean_ug_m3": 8.18,
      "max_daily_mean_ug_m3": 9.83,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "station_name": "Bristol Patchway",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.29,
      "period_median_ug_m3": 8.59,
      "period_p95_daily_mean_ug_m3": 15.64,
      "max_daily_mean_ug_m3": 21.59,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "station_name": "Bristol Patchway",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.5,
      "period_median_ug_m3": 3.92,
      "period_p95_daily_mean_ug_m3": 8.4,
      "max_daily_mean_ug_m3": 11.22,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "station_name": "Christchurch Barrack Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.73,
      "period_median_ug_m3": 9.44,
      "period_p95_daily_mean_ug_m3": 19.88,
      "max_daily_mean_ug_m3": 23.23,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "station_name": "Christchurch Barrack Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.4,
      "period_median_ug_m3": 4.33,
      "period_p95_daily_mean_ug_m3": 5.89,
      "max_daily_mean_ug_m3": 7.62,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "CHGR",
      "uka_id": "UKA01101",
      "station_name": "Cheltenham A40 Gloucester Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.1,
      "period_median_ug_m3": 7.27,
      "period_p95_daily_mean_ug_m3": 11.96,
      "max_daily_mean_ug_m3": 14.79,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "EX",
      "uka_id": "UKA00263",
      "station_name": "Exeter Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.98,
      "period_median_ug_m3": 15.5,
      "period_p95_daily_mean_ug_m3": 22.98,
      "max_daily_mean_ug_m3": 28.68,
      "days_above_who_reference": 1
    },
    {
      "region": "South West",
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "station_name": "Gloucester Tredworth",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.31,
      "period_median_ug_m3": 9.68,
      "period_p95_daily_mean_ug_m3": 14.75,
      "max_daily_mean_ug_m3": 19.62,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "station_name": "Gloucester Tredworth",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.09,
      "period_median_ug_m3": 5.05,
      "period_p95_daily_mean_ug_m3": 8.47,
      "max_daily_mean_ug_m3": 10.83,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "station_name": "Honiton",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.12,
      "period_median_ug_m3": 3.97,
      "period_p95_daily_mean_ug_m3": 6.61,
      "max_daily_mean_ug_m3": 7.31,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "station_name": "Honiton",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.66,
      "period_median_ug_m3": 7.29,
      "period_p95_daily_mean_ug_m3": 13.88,
      "max_daily_mean_ug_m3": 16.96,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "station_name": "Honiton",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.1,
      "period_median_ug_m3": 3.83,
      "period_p95_daily_mean_ug_m3": 7.65,
      "max_daily_mean_ug_m3": 9.26,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "station_name": "Plymouth Centre",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.98,
      "period_median_ug_m3": 10.17,
      "period_p95_daily_mean_ug_m3": 19.33,
      "max_daily_mean_ug_m3": 20.86,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "station_name": "Plymouth Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.19,
      "period_median_ug_m3": 10.16,
      "period_p95_daily_mean_ug_m3": 18.7,
      "max_daily_mean_ug_m3": 27.3,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "station_name": "Plymouth Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.51,
      "period_median_ug_m3": 5.16,
      "period_p95_daily_mean_ug_m3": 8.76,
      "max_daily_mean_ug_m3": 13.29,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "PLYR",
      "uka_id": "UKA00629",
      "station_name": "Plymouth Tavistock Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.56,
      "period_median_ug_m3": 11.29,
      "period_p95_daily_mean_ug_m3": 18.64,
      "max_daily_mean_ug_m3": 19.05,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "station_name": "Saltash Callington Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.63,
      "period_median_ug_m3": 11.29,
      "period_p95_daily_mean_ug_m3": 18.5,
      "max_daily_mean_ug_m3": 26.85,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "station_name": "Saltash Callington Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 3.69,
      "period_median_ug_m3": 3.52,
      "period_p95_daily_mean_ug_m3": 6.05,
      "max_daily_mean_ug_m3": 8.0,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "station_name": "Swindon Walcot",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.9,
      "period_median_ug_m3": 4.54,
      "period_p95_daily_mean_ug_m3": 11.27,
      "max_daily_mean_ug_m3": 14.63,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "station_name": "Swindon Walcot",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.19,
      "period_median_ug_m3": 7.46,
      "period_p95_daily_mean_ug_m3": 13.82,
      "max_daily_mean_ug_m3": 18.94,
      "days_above_who_reference": 0
    },
    {
      "region": "South West",
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "station_name": "Swindon Walcot",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.08,
      "period_median_ug_m3": 3.76,
      "period_p95_daily_mean_ug_m3": 7.47,
      "max_daily_mean_ug_m3": 10.07,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "station_name": "Birmingham University",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.61,
      "period_median_ug_m3": 7.27,
      "period_p95_daily_mean_ug_m3": 12.21,
      "max_daily_mean_ug_m3": 14.63,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "station_name": "Birmingham University",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.09,
      "period_median_ug_m3": 3.69,
      "period_p95_daily_mean_ug_m3": 7.52,
      "max_daily_mean_ug_m3": 8.25,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "station_name": "Bedworth Collycroft",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 26,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 26,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 9.95,
      "period_median_ug_m3": 10.2,
      "period_p95_daily_mean_ug_m3": 15.59,
      "max_daily_mean_ug_m3": 16.55,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "station_name": "Bedworth Collycroft",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 26,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 26,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.1,
      "period_median_ug_m3": 5.07,
      "period_p95_daily_mean_ug_m3": 8.74,
      "max_daily_mean_ug_m3": 9.58,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "station_name": "Birmingham Hall Green",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.96,
      "period_median_ug_m3": 8.52,
      "period_p95_daily_mean_ug_m3": 16.45,
      "max_daily_mean_ug_m3": 18.32,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "station_name": "Birmingham Hall Green",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.75,
      "period_median_ug_m3": 8.89,
      "period_p95_daily_mean_ug_m3": 15.79,
      "max_daily_mean_ug_m3": 16.55,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "station_name": "Birmingham Hall Green",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.7,
      "period_median_ug_m3": 4.55,
      "period_p95_daily_mean_ug_m3": 7.66,
      "max_daily_mean_ug_m3": 9.1,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "station_name": "Birmingham A4540 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 26.38,
      "period_median_ug_m3": 25.17,
      "period_p95_daily_mean_ug_m3": 40.84,
      "max_daily_mean_ug_m3": 41.83,
      "days_above_who_reference": 15
    },
    {
      "region": "West Midlands",
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "station_name": "Birmingham A4540 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.09,
      "period_median_ug_m3": 11.09,
      "period_p95_daily_mean_ug_m3": 16.71,
      "max_daily_mean_ug_m3": 18.35,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "station_name": "Birmingham A4540 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.23,
      "period_median_ug_m3": 5.25,
      "period_p95_daily_mean_ug_m3": 8.07,
      "max_daily_mean_ug_m3": 9.29,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "station_name": "Birmingham Ladywood",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.64,
      "period_median_ug_m3": 9.76,
      "period_p95_daily_mean_ug_m3": 21.01,
      "max_daily_mean_ug_m3": 22.91,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "station_name": "Birmingham Ladywood",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.04,
      "period_median_ug_m3": 7.71,
      "period_p95_daily_mean_ug_m3": 14.27,
      "max_daily_mean_ug_m3": 15.08,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "station_name": "Birmingham Ladywood",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.31,
      "period_median_ug_m3": 3.96,
      "period_p95_daily_mean_ug_m3": 7.91,
      "max_daily_mean_ug_m3": 8.55,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "station_name": "Oldbury Birmingham Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 22.2,
      "period_median_ug_m3": 21.44,
      "period_p95_daily_mean_ug_m3": 35.58,
      "max_daily_mean_ug_m3": 38.81,
      "days_above_who_reference": 9
    },
    {
      "region": "West Midlands",
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "station_name": "Oldbury Birmingham Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.9,
      "period_median_ug_m3": 10.99,
      "period_p95_daily_mean_ug_m3": 17.15,
      "max_daily_mean_ug_m3": 18.35,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "station_name": "Oldbury Birmingham Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.29,
      "period_median_ug_m3": 5.38,
      "period_p95_daily_mean_ug_m3": 8.49,
      "max_daily_mean_ug_m3": 9.22,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "station_name": "Burton-on-Trent Horninglow",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.18,
      "period_median_ug_m3": 12.93,
      "period_p95_daily_mean_ug_m3": 23.43,
      "max_daily_mean_ug_m3": 23.97,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "station_name": "Burton-on-Trent Horninglow",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.57,
      "period_median_ug_m3": 10.04,
      "period_p95_daily_mean_ug_m3": 15.17,
      "max_daily_mean_ug_m3": 15.65,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "station_name": "Burton-on-Trent Horninglow",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.1,
      "period_median_ug_m3": 5.36,
      "period_p95_daily_mean_ug_m3": 8.22,
      "max_daily_mean_ug_m3": 9.71,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "station_name": "Cannock A5190 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.71,
      "period_median_ug_m3": 9.79,
      "period_p95_daily_mean_ug_m3": 19.12,
      "max_daily_mean_ug_m3": 20.32,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "station_name": "Cannock A5190 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.18,
      "period_median_ug_m3": 4.0,
      "period_p95_daily_mean_ug_m3": 7.35,
      "max_daily_mean_ug_m3": 8.17,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "station_name": "Coventry Allesley",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.74,
      "period_median_ug_m3": 8.91,
      "period_p95_daily_mean_ug_m3": 18.09,
      "max_daily_mean_ug_m3": 23.75,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "station_name": "Coventry Allesley",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.47,
      "period_median_ug_m3": 8.38,
      "period_p95_daily_mean_ug_m3": 13.05,
      "max_daily_mean_ug_m3": 15.98,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "station_name": "Coventry Allesley",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.25,
      "period_median_ug_m3": 4.11,
      "period_p95_daily_mean_ug_m3": 7.04,
      "max_daily_mean_ug_m3": 8.64,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "station_name": "Coventry Binley Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 20.76,
      "period_median_ug_m3": 20.11,
      "period_p95_daily_mean_ug_m3": 33.0,
      "max_daily_mean_ug_m3": 35.54,
      "days_above_who_reference": 8
    },
    {
      "region": "West Midlands",
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "station_name": "Coventry Binley Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.68,
      "period_median_ug_m3": 9.75,
      "period_p95_daily_mean_ug_m3": 15.72,
      "max_daily_mean_ug_m3": 16.31,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "station_name": "Coventry Binley Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.9,
      "period_median_ug_m3": 4.53,
      "period_p95_daily_mean_ug_m3": 8.18,
      "max_daily_mean_ug_m3": 8.65,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "station_name": "Leamington Spa",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.95,
      "period_median_ug_m3": 11.09,
      "period_p95_daily_mean_ug_m3": 19.95,
      "max_daily_mean_ug_m3": 22.21,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "station_name": "Leamington Spa",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.88,
      "period_median_ug_m3": 8.39,
      "period_p95_daily_mean_ug_m3": 13.71,
      "max_daily_mean_ug_m3": 16.44,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "station_name": "Leamington Spa",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.54,
      "period_median_ug_m3": 4.33,
      "period_p95_daily_mean_ug_m3": 7.54,
      "max_daily_mean_ug_m3": 9.06,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "station_name": "Leamington Spa Rugby Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.83,
      "period_median_ug_m3": 8.18,
      "period_p95_daily_mean_ug_m3": 18.4,
      "max_daily_mean_ug_m3": 20.91,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "station_name": "Leamington Spa Rugby Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.97,
      "period_median_ug_m3": 7.55,
      "period_p95_daily_mean_ug_m3": 12.52,
      "max_daily_mean_ug_m3": 15.4,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "station_name": "Leamington Spa Rugby Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.14,
      "period_median_ug_m3": 3.91,
      "period_p95_daily_mean_ug_m3": 6.91,
      "max_daily_mean_ug_m3": 8.54,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "LEOM",
      "uka_id": "UKA00489",
      "station_name": "Leominster",
      "environment_type": "Suburban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 3.91,
      "period_median_ug_m3": 3.58,
      "period_p95_daily_mean_ug_m3": 7.18,
      "max_daily_mean_ug_m3": 7.4,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "station_name": "Shrewsbury Underdale",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.66,
      "period_median_ug_m3": 7.03,
      "period_p95_daily_mean_ug_m3": 12.92,
      "max_daily_mean_ug_m3": 15.47,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "station_name": "Shrewsbury Underdale",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 3.86,
      "period_median_ug_m3": 3.61,
      "period_p95_daily_mean_ug_m3": 7.51,
      "max_daily_mean_ug_m3": 8.29,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "station_name": "Stoke-on-Trent A50 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 26,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 26,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 25.04,
      "period_median_ug_m3": 24.4,
      "period_p95_daily_mean_ug_m3": 38.09,
      "max_daily_mean_ug_m3": 40.6,
      "days_above_who_reference": 12
    },
    {
      "region": "West Midlands",
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "station_name": "Stoke-on-Trent A50 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.71,
      "period_median_ug_m3": 10.73,
      "period_p95_daily_mean_ug_m3": 16.12,
      "max_daily_mean_ug_m3": 25.73,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "station_name": "Stoke-on-Trent A50 Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.94,
      "period_median_ug_m3": 5.27,
      "period_p95_daily_mean_ug_m3": 10.11,
      "max_daily_mean_ug_m3": 20.04,
      "days_above_who_reference": 1
    },
    {
      "region": "West Midlands",
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "station_name": "Stoke-on-Trent Centre",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.4,
      "period_median_ug_m3": 13.02,
      "period_p95_daily_mean_ug_m3": 25.05,
      "max_daily_mean_ug_m3": 27.24,
      "days_above_who_reference": 2
    },
    {
      "region": "West Midlands",
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "station_name": "Stoke-on-Trent Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.18,
      "period_median_ug_m3": 8.85,
      "period_p95_daily_mean_ug_m3": 15.15,
      "max_daily_mean_ug_m3": 15.88,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "station_name": "Stoke-on-Trent Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.83,
      "period_median_ug_m3": 4.62,
      "period_p95_daily_mean_ug_m3": 8.54,
      "max_daily_mean_ug_m3": 9.45,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "station_name": "Telford Hollinswood",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.62,
      "period_median_ug_m3": 8.16,
      "period_p95_daily_mean_ug_m3": 15.16,
      "max_daily_mean_ug_m3": 17.94,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "station_name": "Telford Hollinswood",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.85,
      "period_median_ug_m3": 7.45,
      "period_p95_daily_mean_ug_m3": 12.19,
      "max_daily_mean_ug_m3": 15.37,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "station_name": "Telford Hollinswood",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 3.88,
      "period_median_ug_m3": 3.64,
      "period_p95_daily_mean_ug_m3": 7.05,
      "max_daily_mean_ug_m3": 8.38,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WAL4",
      "uka_id": "UKA00565",
      "station_name": "Walsall Woodlands",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.62,
      "period_median_ug_m3": 8.25,
      "period_p95_daily_mean_ug_m3": 16.16,
      "max_daily_mean_ug_m3": 17.71,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "station_name": "Walsall Caldmore",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.66,
      "period_median_ug_m3": 9.92,
      "period_p95_daily_mean_ug_m3": 15.64,
      "max_daily_mean_ug_m3": 16.22,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "station_name": "Walsall Caldmore",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.32,
      "period_median_ug_m3": 5.31,
      "period_p95_daily_mean_ug_m3": 8.79,
      "max_daily_mean_ug_m3": 8.95,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WBKP",
      "uka_id": "UKA00658",
      "station_name": "West Bromwich Kenrick Park",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.71,
      "period_median_ug_m3": 12.08,
      "period_p95_daily_mean_ug_m3": 23.97,
      "max_daily_mean_ug_m3": 25.69,
      "days_above_who_reference": 2
    },
    {
      "region": "West Midlands",
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "station_name": "Wolverhampton East Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.29,
      "period_median_ug_m3": 9.35,
      "period_p95_daily_mean_ug_m3": 15.07,
      "max_daily_mean_ug_m3": 15.95,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "station_name": "Wolverhampton East Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.97,
      "period_median_ug_m3": 4.63,
      "period_p95_daily_mean_ug_m3": 8.53,
      "max_daily_mean_ug_m3": 9.24,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "station_name": "Worcester Tolladine",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.26,
      "period_median_ug_m3": 7.47,
      "period_p95_daily_mean_ug_m3": 12.55,
      "max_daily_mean_ug_m3": 16.65,
      "days_above_who_reference": 0
    },
    {
      "region": "West Midlands",
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "station_name": "Worcester Tolladine",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.27,
      "period_median_ug_m3": 3.98,
      "period_p95_daily_mean_ug_m3": 7.25,
      "max_daily_mean_ug_m3": 9.14,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "station_name": "Barnsley Gawber",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.24,
      "period_median_ug_m3": 8.22,
      "period_p95_daily_mean_ug_m3": 14.98,
      "max_daily_mean_ug_m3": 16.47,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "station_name": "Barnsley Gawber",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.67,
      "period_median_ug_m3": 8.92,
      "period_p95_daily_mean_ug_m3": 15.4,
      "max_daily_mean_ug_m3": 20.41,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "station_name": "Barnsley Gawber",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.7,
      "period_median_ug_m3": 4.48,
      "period_p95_daily_mean_ug_m3": 8.99,
      "max_daily_mean_ug_m3": 9.68,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BDMA",
      "uka_id": "UKA00611",
      "station_name": "Bradford Mayo Avenue",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 19.56,
      "period_median_ug_m3": 20.4,
      "period_p95_daily_mean_ug_m3": 33.46,
      "max_daily_mean_ug_m3": 36.76,
      "days_above_who_reference": 8
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "station_name": "Bradford Shipley Airedale Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.24,
      "period_median_ug_m3": 10.89,
      "period_p95_daily_mean_ug_m3": 18.2,
      "max_daily_mean_ug_m3": 19.35,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "station_name": "Bradford Shipley Airedale Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.08,
      "period_median_ug_m3": 6.11,
      "period_p95_daily_mean_ug_m3": 10.37,
      "max_daily_mean_ug_m3": 11.29,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "station_name": "Bradford West Park",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.4,
      "period_median_ug_m3": 10.67,
      "period_p95_daily_mean_ug_m3": 20.95,
      "max_daily_mean_ug_m3": 24.2,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "station_name": "Bradford West Park",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.17,
      "period_median_ug_m3": 5.91,
      "period_p95_daily_mean_ug_m3": 11.73,
      "max_daily_mean_ug_m3": 16.28,
      "days_above_who_reference": 1
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "station_name": "Doncaster A630 Cleveland Street",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 19.24,
      "period_median_ug_m3": 20.76,
      "period_p95_daily_mean_ug_m3": 29.25,
      "max_daily_mean_ug_m3": 32.23,
      "days_above_who_reference": 7
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "station_name": "Doncaster A630 Cleveland Street",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.56,
      "period_median_ug_m3": 5.65,
      "period_p95_daily_mean_ug_m3": 9.81,
      "max_daily_mean_ug_m3": 11.83,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "station_name": "Dewsbury Ashworth Grange",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.01,
      "period_median_ug_m3": 11.7,
      "period_p95_daily_mean_ug_m3": 20.15,
      "max_daily_mean_ug_m3": 22.4,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "station_name": "Dewsbury Ashworth Grange",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.92,
      "period_median_ug_m3": 9.52,
      "period_p95_daily_mean_ug_m3": 15.53,
      "max_daily_mean_ug_m3": 18.78,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "station_name": "Dewsbury Ashworth Grange",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.35,
      "period_median_ug_m3": 5.36,
      "period_p95_daily_mean_ug_m3": 9.53,
      "max_daily_mean_ug_m3": 10.27,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "station_name": "Harrogate Woodlands",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.92,
      "period_median_ug_m3": 7.59,
      "period_p95_daily_mean_ug_m3": 14.14,
      "max_daily_mean_ug_m3": 15.89,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "station_name": "Harrogate Woodlands",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.51,
      "period_median_ug_m3": 4.14,
      "period_p95_daily_mean_ug_m3": 8.71,
      "max_daily_mean_ug_m3": 11.17,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "station_name": "Hull Freetown",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.73,
      "period_median_ug_m3": 15.05,
      "period_p95_daily_mean_ug_m3": 23.34,
      "max_daily_mean_ug_m3": 25.51,
      "days_above_who_reference": 1
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "station_name": "Hull Freetown",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.26,
      "period_median_ug_m3": 12.42,
      "period_p95_daily_mean_ug_m3": 22.06,
      "max_daily_mean_ug_m3": 24.85,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "station_name": "Hull Freetown",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.84,
      "period_median_ug_m3": 5.42,
      "period_p95_daily_mean_ug_m3": 12.27,
      "max_daily_mean_ug_m3": 14.61,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "station_name": "Hull Holderness Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 18.35,
      "period_median_ug_m3": 19.06,
      "period_p95_daily_mean_ug_m3": 27.14,
      "max_daily_mean_ug_m3": 29.1,
      "days_above_who_reference": 3
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "station_name": "Hull Holderness Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.62,
      "period_median_ug_m3": 13.36,
      "period_p95_daily_mean_ug_m3": 23.16,
      "max_daily_mean_ug_m3": 26.41,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "station_name": "Hull Holderness Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.55,
      "period_median_ug_m3": 6.19,
      "period_p95_daily_mean_ug_m3": 13.49,
      "max_daily_mean_ug_m3": 15.49,
      "days_above_who_reference": 2
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "station_name": "Immingham Woodlands Avenue",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.03,
      "period_median_ug_m3": 6.69,
      "period_p95_daily_mean_ug_m3": 9.87,
      "max_daily_mean_ug_m3": 10.84,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "station_name": "Immingham Woodlands Avenue",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.7,
      "period_median_ug_m3": 9.1,
      "period_p95_daily_mean_ug_m3": 16.94,
      "max_daily_mean_ug_m3": 21.21,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "station_name": "Immingham Woodlands Avenue",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.98,
      "period_median_ug_m3": 4.5,
      "period_p95_daily_mean_ug_m3": 10.16,
      "max_daily_mean_ug_m3": 13.97,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "station_name": "Leeds Headingley Kerbside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.79,
      "period_median_ug_m3": 13.73,
      "period_p95_daily_mean_ug_m3": 22.47,
      "max_daily_mean_ug_m3": 23.47,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "station_name": "Leeds Headingley Kerbside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.69,
      "period_median_ug_m3": 13.39,
      "period_p95_daily_mean_ug_m3": 19.17,
      "max_daily_mean_ug_m3": 22.02,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "station_name": "Leeds Headingley Kerbside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.67,
      "period_median_ug_m3": 6.96,
      "period_p95_daily_mean_ug_m3": 9.02,
      "max_daily_mean_ug_m3": 11.86,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "station_name": "Leeds Centre",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 17.96,
      "period_median_ug_m3": 16.7,
      "period_p95_daily_mean_ug_m3": 26.55,
      "max_daily_mean_ug_m3": 29.17,
      "days_above_who_reference": 2
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "station_name": "Leeds Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.03,
      "period_median_ug_m3": 9.87,
      "period_p95_daily_mean_ug_m3": 16.12,
      "max_daily_mean_ug_m3": 19.32,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "station_name": "Leeds Centre",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.37,
      "period_median_ug_m3": 5.32,
      "period_p95_daily_mean_ug_m3": 9.27,
      "max_daily_mean_ug_m3": 11.67,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "station_name": "Rotherham East Dene",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.58,
      "period_median_ug_m3": 10.86,
      "period_p95_daily_mean_ug_m3": 16.44,
      "max_daily_mean_ug_m3": 17.32,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "station_name": "Rotherham East Dene",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.91,
      "period_median_ug_m3": 5.93,
      "period_p95_daily_mean_ug_m3": 9.5,
      "max_daily_mean_ug_m3": 11.0,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "station_name": "Scunthorpe Town",
      "environment_type": "Urban Industrial",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.11,
      "period_median_ug_m3": 8.61,
      "period_p95_daily_mean_ug_m3": 13.37,
      "max_daily_mean_ug_m3": 19.09,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "station_name": "Scunthorpe Town",
      "environment_type": "Urban Industrial",
      "pollutant": "PM10",
      "valid_days": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.24,
      "period_median_ug_m3": 12.69,
      "period_p95_daily_mean_ug_m3": 25.51,
      "max_daily_mean_ug_m3": 35.59,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "station_name": "Scunthorpe Town",
      "environment_type": "Urban Industrial",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.12,
      "period_median_ug_m3": 6.88,
      "period_p95_daily_mean_ug_m3": 11.05,
      "max_daily_mean_ug_m3": 14.21,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "station_name": "Sheffield Barnsley Road",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 26.18,
      "period_median_ug_m3": 27.42,
      "period_p95_daily_mean_ug_m3": 36.26,
      "max_daily_mean_ug_m3": 36.8,
      "days_above_who_reference": 17
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "station_name": "Sheffield Barnsley Road",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.4,
      "period_median_ug_m3": 6.13,
      "period_p95_daily_mean_ug_m3": 10.96,
      "max_daily_mean_ug_m3": 13.68,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "station_name": "Sheffield Devonshire Green",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.64,
      "period_median_ug_m3": 11.06,
      "period_p95_daily_mean_ug_m3": 19.23,
      "max_daily_mean_ug_m3": 23.29,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "station_name": "Sheffield Devonshire Green",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.87,
      "period_median_ug_m3": 8.88,
      "period_p95_daily_mean_ug_m3": 14.89,
      "max_daily_mean_ug_m3": 16.4,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "station_name": "Sheffield Devonshire Green",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.64,
      "period_median_ug_m3": 4.67,
      "period_p95_daily_mean_ug_m3": 8.67,
      "max_daily_mean_ug_m3": 9.38,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "station_name": "Sheffield Tinsley",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 17.93,
      "period_median_ug_m3": 16.63,
      "period_p95_daily_mean_ug_m3": 26.64,
      "max_daily_mean_ug_m3": 27.5,
      "days_above_who_reference": 3
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "station_name": "Sheffield Tinsley",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.08,
      "period_median_ug_m3": 11.53,
      "period_p95_daily_mean_ug_m3": 19.78,
      "max_daily_mean_ug_m3": 27.57,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "station_name": "Sheffield Tinsley",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.24,
      "period_median_ug_m3": 5.33,
      "period_p95_daily_mean_ug_m3": 8.92,
      "max_daily_mean_ug_m3": 10.7,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "station_name": "Wakefield Alverthorpe",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.32,
      "period_median_ug_m3": 9.82,
      "period_p95_daily_mean_ug_m3": 16.68,
      "max_daily_mean_ug_m3": 17.68,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "station_name": "Wakefield Alverthorpe",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.53,
      "period_median_ug_m3": 5.35,
      "period_p95_daily_mean_ug_m3": 9.07,
      "max_daily_mean_ug_m3": 11.26,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "station_name": "York Bootham",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.24,
      "period_median_ug_m3": 11.83,
      "period_p95_daily_mean_ug_m3": 18.28,
      "max_daily_mean_ug_m3": 21.17,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "station_name": "York Bootham",
      "environment_type": "Urban Background",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 11.18,
      "period_median_ug_m3": 11.35,
      "period_p95_daily_mean_ug_m3": 15.66,
      "max_daily_mean_ug_m3": 16.13,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "station_name": "York Bootham",
      "environment_type": "Urban Background",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.05,
      "period_median_ug_m3": 6.17,
      "period_p95_daily_mean_ug_m3": 8.75,
      "max_daily_mean_ug_m3": 9.38,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "station_name": "York Fishergate",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 14.33,
      "period_median_ug_m3": 14.24,
      "period_p95_daily_mean_ug_m3": 20.97,
      "max_daily_mean_ug_m3": 23.74,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "station_name": "York Fishergate",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.54,
      "period_median_ug_m3": 12.46,
      "period_p95_daily_mean_ug_m3": 18.6,
      "max_daily_mean_ug_m3": 19.93,
      "days_above_who_reference": 0
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "station_name": "York Fishergate",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.58,
      "period_median_ug_m3": 5.62,
      "period_p95_daily_mean_ug_m3": 10.26,
      "max_daily_mean_ug_m3": 11.33,
      "days_above_who_reference": 0
    }
  ],
  "regional_statistics": [
    {
      "region": "East Midlands",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 13.69,
      "p95_daily_mean_ug_m3": 24.14,
      "minimum_contributing_stations": 6,
      "median_contributing_stations": 9.0,
      "maximum_contributing_stations": 9,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.06,
      "p95_daily_mean_ug_m3": 14.57,
      "minimum_contributing_stations": 11,
      "median_contributing_stations": 11.0,
      "maximum_contributing_stations": 11,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.94,
      "p95_daily_mean_ug_m3": 7.95,
      "minimum_contributing_stations": 12,
      "median_contributing_stations": 13.0,
      "maximum_contributing_stations": 13,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "East of England",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 12.82,
      "p95_daily_mean_ug_m3": 24.48,
      "minimum_contributing_stations": 4,
      "median_contributing_stations": 4.0,
      "maximum_contributing_stations": 4,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "East of England",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 8.82,
      "p95_daily_mean_ug_m3": 14.97,
      "minimum_contributing_stations": 4,
      "median_contributing_stations": 4.0,
      "maximum_contributing_stations": 4,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "East of England",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.43,
      "p95_daily_mean_ug_m3": 7.82,
      "minimum_contributing_stations": 5,
      "median_contributing_stations": 5.0,
      "maximum_contributing_stations": 5,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "London",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 18.28,
      "p95_daily_mean_ug_m3": 32.27,
      "minimum_contributing_stations": 4,
      "median_contributing_stations": 4.0,
      "maximum_contributing_stations": 4,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "London",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 10.02,
      "p95_daily_mean_ug_m3": 16.19,
      "minimum_contributing_stations": 4,
      "median_contributing_stations": 5.0,
      "maximum_contributing_stations": 5,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "London",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 5.18,
      "p95_daily_mean_ug_m3": 8.72,
      "minimum_contributing_stations": 6,
      "median_contributing_stations": 7.0,
      "maximum_contributing_stations": 7,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "North East",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.14,
      "p95_daily_mean_ug_m3": 14.71,
      "minimum_contributing_stations": 4,
      "median_contributing_stations": 8.0,
      "maximum_contributing_stations": 8,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "North East",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.11,
      "p95_daily_mean_ug_m3": 13.31,
      "minimum_contributing_stations": 9,
      "median_contributing_stations": 10.0,
      "maximum_contributing_stations": 10,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "North East",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.68,
      "p95_daily_mean_ug_m3": 8.7,
      "minimum_contributing_stations": 11,
      "median_contributing_stations": 12.0,
      "maximum_contributing_stations": 12,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "North West",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 11.56,
      "p95_daily_mean_ug_m3": 19.49,
      "minimum_contributing_stations": 16,
      "median_contributing_stations": 17.0,
      "maximum_contributing_stations": 17,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "North West",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.76,
      "p95_daily_mean_ug_m3": 16.04,
      "minimum_contributing_stations": 14,
      "median_contributing_stations": 16.0,
      "maximum_contributing_stations": 16,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "North West",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 5.26,
      "p95_daily_mean_ug_m3": 8.69,
      "minimum_contributing_stations": 17,
      "median_contributing_stations": 18.0,
      "maximum_contributing_stations": 18,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "South East",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 13.09,
      "p95_daily_mean_ug_m3": 21.38,
      "minimum_contributing_stations": 12,
      "median_contributing_stations": 13.0,
      "maximum_contributing_stations": 13,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "South East",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.1,
      "p95_daily_mean_ug_m3": 16.51,
      "minimum_contributing_stations": 15,
      "median_contributing_stations": 16.0,
      "maximum_contributing_stations": 16,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "South East",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.89,
      "p95_daily_mean_ug_m3": 8.26,
      "minimum_contributing_stations": 18,
      "median_contributing_stations": 18.0,
      "maximum_contributing_stations": 18,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "South West",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 10.68,
      "p95_daily_mean_ug_m3": 18.45,
      "minimum_contributing_stations": 9,
      "median_contributing_stations": 10.0,
      "maximum_contributing_stations": 10,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "South West",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.06,
      "p95_daily_mean_ug_m3": 15.06,
      "minimum_contributing_stations": 9,
      "median_contributing_stations": 10.0,
      "maximum_contributing_stations": 10,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "South West",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.35,
      "p95_daily_mean_ug_m3": 7.73,
      "minimum_contributing_stations": 11,
      "median_contributing_stations": 14.0,
      "maximum_contributing_stations": 14,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "West Midlands",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 10.82,
      "p95_daily_mean_ug_m3": 19.85,
      "minimum_contributing_stations": 14,
      "median_contributing_stations": 16.0,
      "maximum_contributing_stations": 16,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "West Midlands",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 8.65,
      "p95_daily_mean_ug_m3": 13.36,
      "minimum_contributing_stations": 16,
      "median_contributing_stations": 18.0,
      "maximum_contributing_stations": 18,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.31,
      "p95_daily_mean_ug_m3": 7.43,
      "minimum_contributing_stations": 17,
      "median_contributing_stations": 19.0,
      "maximum_contributing_stations": 19,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 13.77,
      "p95_daily_mean_ug_m3": 19.71,
      "minimum_contributing_stations": 14,
      "median_contributing_stations": 15.0,
      "maximum_contributing_stations": 15,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 10.91,
      "p95_daily_mean_ug_m3": 16.94,
      "minimum_contributing_stations": 16,
      "median_contributing_stations": 17.0,
      "maximum_contributing_stations": 17,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 5.54,
      "p95_daily_mean_ug_m3": 9.42,
      "minimum_contributing_stations": 18,
      "median_contributing_stations": 19.0,
      "maximum_contributing_stations": 19,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    }
  ],
  "daily_regional_statistics": [
    {
      "date": "2026-09-12",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.49,
      "regional_daily_mean_ug_m3": 13.26,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.17,
      "regional_daily_mean_ug_m3": 8.55,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.71,
      "regional_daily_mean_ug_m3": 4.81,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.11,
      "regional_daily_mean_ug_m3": 10.17,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.34,
      "regional_daily_mean_ug_m3": 7.35,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.91,
      "regional_daily_mean_ug_m3": 3.9,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.7,
      "regional_daily_mean_ug_m3": 16.33,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.38,
      "regional_daily_mean_ug_m3": 7.64,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.93,
      "regional_daily_mean_ug_m3": 3.86,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.53,
      "regional_daily_mean_ug_m3": 7.32,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.18,
      "regional_daily_mean_ug_m3": 9.52,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.91,
      "regional_daily_mean_ug_m3": 6.29,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.09,
      "regional_daily_mean_ug_m3": 9.6,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.17,
      "regional_daily_mean_ug_m3": 10.94,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.89,
      "regional_daily_mean_ug_m3": 6.62,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.91,
      "regional_daily_mean_ug_m3": 10.62,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.43,
      "regional_daily_mean_ug_m3": 8.23,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.82,
      "regional_daily_mean_ug_m3": 3.99,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.35,
      "regional_daily_mean_ug_m3": 9.14,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.52,
      "regional_daily_mean_ug_m3": 8.25,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.75,
      "regional_daily_mean_ug_m3": 3.95,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.16,
      "regional_daily_mean_ug_m3": 9.66,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.51,
      "regional_daily_mean_ug_m3": 7.48,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.0,
      "regional_daily_mean_ug_m3": 4.07,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.12,
      "regional_daily_mean_ug_m3": 12.46,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.04,
      "regional_daily_mean_ug_m3": 11.04,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-12",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.52,
      "regional_daily_mean_ug_m3": 6.75,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.77,
      "regional_daily_mean_ug_m3": 12.66,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.66,
      "regional_daily_mean_ug_m3": 6.17,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.03,
      "regional_daily_mean_ug_m3": 3.6,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.28,
      "regional_daily_mean_ug_m3": 8.82,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.18,
      "regional_daily_mean_ug_m3": 4.9,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.68,
      "regional_daily_mean_ug_m3": 2.66,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.63,
      "regional_daily_mean_ug_m3": 12.42,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.55,
      "regional_daily_mean_ug_m3": 4.53,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.91,
      "regional_daily_mean_ug_m3": 2.76,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.89,
      "regional_daily_mean_ug_m3": 12.17,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.84,
      "regional_daily_mean_ug_m3": 11.87,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.0,
      "regional_daily_mean_ug_m3": 8.07,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.87,
      "regional_daily_mean_ug_m3": 11.29,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.7,
      "regional_daily_mean_ug_m3": 8.11,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.56,
      "regional_daily_mean_ug_m3": 5.06,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.86,
      "regional_daily_mean_ug_m3": 7.42,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.72,
      "regional_daily_mean_ug_m3": 7.39,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.21,
      "regional_daily_mean_ug_m3": 3.73,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.45,
      "regional_daily_mean_ug_m3": 5.27,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.74,
      "regional_daily_mean_ug_m3": 5.62,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.11,
      "regional_daily_mean_ug_m3": 2.53,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.07,
      "regional_daily_mean_ug_m3": 8.72,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 3.77,
      "regional_daily_mean_ug_m3": 4.1,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.44,
      "regional_daily_mean_ug_m3": 1.74,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.79,
      "regional_daily_mean_ug_m3": 15.64,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.68,
      "regional_daily_mean_ug_m3": 9.59,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-13",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.47,
      "regional_daily_mean_ug_m3": 5.61,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.23,
      "regional_daily_mean_ug_m3": 11.31,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.94,
      "regional_daily_mean_ug_m3": 5.38,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.17,
      "regional_daily_mean_ug_m3": 2.28,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.06,
      "regional_daily_mean_ug_m3": 8.99,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.04,
      "regional_daily_mean_ug_m3": 5.17,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.87,
      "regional_daily_mean_ug_m3": 2.36,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.18,
      "regional_daily_mean_ug_m3": 13.79,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.46,
      "regional_daily_mean_ug_m3": 7.61,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.8,
      "regional_daily_mean_ug_m3": 3.84,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.29,
      "regional_daily_mean_ug_m3": 8.44,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.74,
      "regional_daily_mean_ug_m3": 8.07,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.98,
      "regional_daily_mean_ug_m3": 5.05,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.42,
      "regional_daily_mean_ug_m3": 10.84,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.48,
      "regional_daily_mean_ug_m3": 6.69,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.37,
      "regional_daily_mean_ug_m3": 3.31,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.12,
      "regional_daily_mean_ug_m3": 9.46,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.94,
      "regional_daily_mean_ug_m3": 5.85,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.22,
      "regional_daily_mean_ug_m3": 3.16,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.26,
      "regional_daily_mean_ug_m3": 6.65,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.31,
      "regional_daily_mean_ug_m3": 4.2,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.97,
      "regional_daily_mean_ug_m3": 2.03,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.53,
      "regional_daily_mean_ug_m3": 9.36,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.99,
      "regional_daily_mean_ug_m3": 5.02,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.89,
      "regional_daily_mean_ug_m3": 1.9,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.46,
      "regional_daily_mean_ug_m3": 12.96,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.84,
      "regional_daily_mean_ug_m3": 8.09,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-14",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.56,
      "regional_daily_mean_ug_m3": 4.07,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.12,
      "regional_daily_mean_ug_m3": 9.89,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.65,
      "regional_daily_mean_ug_m3": 5.94,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.6,
      "regional_daily_mean_ug_m3": 2.65,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.71,
      "regional_daily_mean_ug_m3": 11.13,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.64,
      "regional_daily_mean_ug_m3": 5.57,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.94,
      "regional_daily_mean_ug_m3": 2.87,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.65,
      "regional_daily_mean_ug_m3": 11.33,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.55,
      "regional_daily_mean_ug_m3": 7.21,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.03,
      "regional_daily_mean_ug_m3": 3.04,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 2.61,
      "regional_daily_mean_ug_m3": 3.3,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.4,
      "regional_daily_mean_ug_m3": 5.19,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.95,
      "regional_daily_mean_ug_m3": 2.4,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.25,
      "regional_daily_mean_ug_m3": 6.99,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.16,
      "regional_daily_mean_ug_m3": 8.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.5,
      "regional_daily_mean_ug_m3": 3.63,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.52,
      "regional_daily_mean_ug_m3": 10.83,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.95,
      "regional_daily_mean_ug_m3": 7.19,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.53,
      "regional_daily_mean_ug_m3": 3.54,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.84,
      "regional_daily_mean_ug_m3": 8.14,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.89,
      "regional_daily_mean_ug_m3": 8.93,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.38,
      "regional_daily_mean_ug_m3": 4.13,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.99,
      "regional_daily_mean_ug_m3": 8.86,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.24,
      "regional_daily_mean_ug_m3": 5.64,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.6,
      "regional_daily_mean_ug_m3": 2.69,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.36,
      "regional_daily_mean_ug_m3": 8.24,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.16,
      "regional_daily_mean_ug_m3": 6.25,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-15",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.71,
      "regional_daily_mean_ug_m3": 2.92,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.74,
      "regional_daily_mean_ug_m3": 11.06,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.22,
      "regional_daily_mean_ug_m3": 6.04,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.66,
      "regional_daily_mean_ug_m3": 2.71,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.03,
      "regional_daily_mean_ug_m3": 13.97,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.5,
      "regional_daily_mean_ug_m3": 5.54,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.66,
      "regional_daily_mean_ug_m3": 3.0,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.08,
      "regional_daily_mean_ug_m3": 14.84,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.93,
      "regional_daily_mean_ug_m3": 7.09,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.7,
      "regional_daily_mean_ug_m3": 2.78,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 3.39,
      "regional_daily_mean_ug_m3": 4.35,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.0,
      "regional_daily_mean_ug_m3": 4.86,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.04,
      "regional_daily_mean_ug_m3": 2.53,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.73,
      "regional_daily_mean_ug_m3": 8.69,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.42,
      "regional_daily_mean_ug_m3": 7.05,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.91,
      "regional_daily_mean_ug_m3": 3.31,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.78,
      "regional_daily_mean_ug_m3": 11.92,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.79,
      "regional_daily_mean_ug_m3": 6.63,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.68,
      "regional_daily_mean_ug_m3": 2.85,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.84,
      "regional_daily_mean_ug_m3": 9.85,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.19,
      "regional_daily_mean_ug_m3": 7.21,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.79,
      "regional_daily_mean_ug_m3": 2.88,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.09,
      "regional_daily_mean_ug_m3": 11.12,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.47,
      "regional_daily_mean_ug_m3": 5.52,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.42,
      "regional_daily_mean_ug_m3": 2.51,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.11,
      "regional_daily_mean_ug_m3": 10.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.74,
      "regional_daily_mean_ug_m3": 6.19,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-16",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.4,
      "regional_daily_mean_ug_m3": 2.77,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.02,
      "regional_daily_mean_ug_m3": 8.29,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.96,
      "regional_daily_mean_ug_m3": 6.86,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.21,
      "regional_daily_mean_ug_m3": 3.12,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.02,
      "regional_daily_mean_ug_m3": 9.86,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.27,
      "regional_daily_mean_ug_m3": 6.17,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.97,
      "regional_daily_mean_ug_m3": 3.08,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.81,
      "regional_daily_mean_ug_m3": 13.92,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.19,
      "regional_daily_mean_ug_m3": 8.18,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.47,
      "regional_daily_mean_ug_m3": 3.46,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.55,
      "regional_daily_mean_ug_m3": 6.35,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.45,
      "regional_daily_mean_ug_m3": 9.66,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.39,
      "regional_daily_mean_ug_m3": 4.66,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.88,
      "regional_daily_mean_ug_m3": 7.67,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.44,
      "regional_daily_mean_ug_m3": 12.67,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.5,
      "regional_daily_mean_ug_m3": 6.49,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.47,
      "regional_daily_mean_ug_m3": 9.34,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.05,
      "regional_daily_mean_ug_m3": 8.0,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.57,
      "regional_daily_mean_ug_m3": 3.57,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.99,
      "regional_daily_mean_ug_m3": 6.63,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.59,
      "regional_daily_mean_ug_m3": 10.64,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.29,
      "regional_daily_mean_ug_m3": 4.73,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.89,
      "regional_daily_mean_ug_m3": 8.84,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.42,
      "regional_daily_mean_ug_m3": 6.82,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.11,
      "regional_daily_mean_ug_m3": 3.19,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.78,
      "regional_daily_mean_ug_m3": 8.78,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.65,
      "regional_daily_mean_ug_m3": 9.84,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-17",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.46,
      "regional_daily_mean_ug_m3": 4.72,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.15,
      "regional_daily_mean_ug_m3": 11.27,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.03,
      "regional_daily_mean_ug_m3": 15.66,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.44,
      "regional_daily_mean_ug_m3": 8.63,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.95,
      "regional_daily_mean_ug_m3": 9.12,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.9,
      "regional_daily_mean_ug_m3": 14.54,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.39,
      "regional_daily_mean_ug_m3": 8.19,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.33,
      "regional_daily_mean_ug_m3": 14.86,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 16.56,
      "regional_daily_mean_ug_m3": 17.41,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.07,
      "regional_daily_mean_ug_m3": 8.96,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.37,
      "regional_daily_mean_ug_m3": 7.45,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.7,
      "regional_daily_mean_ug_m3": 12.19,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.56,
      "regional_daily_mean_ug_m3": 6.9,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.89,
      "regional_daily_mean_ug_m3": 9.39,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 17.29,
      "regional_daily_mean_ug_m3": 17.04,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.73,
      "regional_daily_mean_ug_m3": 9.23,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.21,
      "regional_daily_mean_ug_m3": 10.53,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 18.65,
      "regional_daily_mean_ug_m3": 18.89,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.43,
      "regional_daily_mean_ug_m3": 9.42,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.55,
      "regional_daily_mean_ug_m3": 8.16,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.55,
      "regional_daily_mean_ug_m3": 22.44,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.68,
      "regional_daily_mean_ug_m3": 10.6,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.61,
      "regional_daily_mean_ug_m3": 9.1,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.97,
      "regional_daily_mean_ug_m3": 16.01,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.68,
      "regional_daily_mean_ug_m3": 8.74,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.76,
      "regional_daily_mean_ug_m3": 10.3,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 16.04,
      "regional_daily_mean_ug_m3": 16.09,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-18",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.38,
      "regional_daily_mean_ug_m3": 8.74,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.29,
      "regional_daily_mean_ug_m3": 7.56,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.54,
      "regional_daily_mean_ug_m3": 6.77,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.52,
      "regional_daily_mean_ug_m3": 3.5,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.55,
      "regional_daily_mean_ug_m3": 5.5,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.42,
      "regional_daily_mean_ug_m3": 6.73,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.34,
      "regional_daily_mean_ug_m3": 3.66,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.49,
      "regional_daily_mean_ug_m3": 9.92,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.54,
      "regional_daily_mean_ug_m3": 7.58,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.07,
      "regional_daily_mean_ug_m3": 3.92,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 2.23,
      "regional_daily_mean_ug_m3": 3.97,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.96,
      "regional_daily_mean_ug_m3": 8.02,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.63,
      "regional_daily_mean_ug_m3": 4.01,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.0,
      "regional_daily_mean_ug_m3": 5.82,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.65,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.76,
      "regional_daily_mean_ug_m3": 5.23,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.7,
      "regional_daily_mean_ug_m3": 6.41,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.03,
      "regional_daily_mean_ug_m3": 9.93,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.26,
      "regional_daily_mean_ug_m3": 5.03,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.42,
      "regional_daily_mean_ug_m3": 5.1,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.75,
      "regional_daily_mean_ug_m3": 9.9,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.69,
      "regional_daily_mean_ug_m3": 4.75,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.4,
      "regional_daily_mean_ug_m3": 5.66,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.94,
      "regional_daily_mean_ug_m3": 7.07,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.6,
      "regional_daily_mean_ug_m3": 3.6,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.71,
      "regional_daily_mean_ug_m3": 7.46,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.05,
      "regional_daily_mean_ug_m3": 8.06,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-19",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.17,
      "regional_daily_mean_ug_m3": 4.28,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.07,
      "regional_daily_mean_ug_m3": 11.73,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.59,
      "regional_daily_mean_ug_m3": 12.94,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.44,
      "regional_daily_mean_ug_m3": 6.48,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.43,
      "regional_daily_mean_ug_m3": 12.32,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.46,
      "regional_daily_mean_ug_m3": 11.26,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.6,
      "regional_daily_mean_ug_m3": 6.1,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.42,
      "regional_daily_mean_ug_m3": 15.6,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.1,
      "regional_daily_mean_ug_m3": 10.62,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.55,
      "regional_daily_mean_ug_m3": 6.05,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 2.32,
      "regional_daily_mean_ug_m3": 3.31,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.25,
      "regional_daily_mean_ug_m3": 10.65,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.97,
      "regional_daily_mean_ug_m3": 5.34,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.81,
      "regional_daily_mean_ug_m3": 7.06,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 16.37,
      "regional_daily_mean_ug_m3": 16.66,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.84,
      "regional_daily_mean_ug_m3": 7.8,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.82,
      "regional_daily_mean_ug_m3": 12.7,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.52,
      "regional_daily_mean_ug_m3": 10.78,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.78,
      "regional_daily_mean_ug_m3": 5.65,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.87,
      "regional_daily_mean_ug_m3": 9.28,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.09,
      "regional_daily_mean_ug_m3": 14.23,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.86,
      "regional_daily_mean_ug_m3": 7.02,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.87,
      "regional_daily_mean_ug_m3": 10.89,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.95,
      "regional_daily_mean_ug_m3": 13.04,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.58,
      "regional_daily_mean_ug_m3": 6.62,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.06,
      "regional_daily_mean_ug_m3": 8.0,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.44,
      "regional_daily_mean_ug_m3": 14.4,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-20",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.65,
      "regional_daily_mean_ug_m3": 6.83,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 25.09,
      "regional_daily_mean_ug_m3": 25.16,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.81,
      "regional_daily_mean_ug_m3": 13.57,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.83,
      "regional_daily_mean_ug_m3": 6.44,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 24.58,
      "regional_daily_mean_ug_m3": 26.44,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.08,
      "regional_daily_mean_ug_m3": 14.14,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.12,
      "regional_daily_mean_ug_m3": 7.32,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 32.92,
      "regional_daily_mean_ug_m3": 34.45,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.74,
      "regional_daily_mean_ug_m3": 15.94,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.81,
      "regional_daily_mean_ug_m3": 7.56,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.89,
      "regional_daily_mean_ug_m3": 11.81,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.06,
      "regional_daily_mean_ug_m3": 10.08,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.63,
      "regional_daily_mean_ug_m3": 4.91,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 23.23,
      "regional_daily_mean_ug_m3": 22.17,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.86,
      "regional_daily_mean_ug_m3": 16.22,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.44,
      "regional_daily_mean_ug_m3": 7.84,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.98,
      "regional_daily_mean_ug_m3": 22.43,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.63,
      "regional_daily_mean_ug_m3": 12.61,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.04,
      "regional_daily_mean_ug_m3": 6.52,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.52,
      "regional_daily_mean_ug_m3": 15.94,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.31,
      "regional_daily_mean_ug_m3": 11.69,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.03,
      "regional_daily_mean_ug_m3": 6.13,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.98,
      "regional_daily_mean_ug_m3": 24.3,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.05,
      "regional_daily_mean_ug_m3": 13.13,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.54,
      "regional_daily_mean_ug_m3": 6.48,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.36,
      "regional_daily_mean_ug_m3": 19.26,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.44,
      "regional_daily_mean_ug_m3": 12.59,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-21",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.23,
      "regional_daily_mean_ug_m3": 6.27,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 26.81,
      "regional_daily_mean_ug_m3": 24.15,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.36,
      "regional_daily_mean_ug_m3": 11.75,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.67,
      "regional_daily_mean_ug_m3": 5.5,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 30.39,
      "regional_daily_mean_ug_m3": 29.65,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.17,
      "regional_daily_mean_ug_m3": 13.62,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.91,
      "regional_daily_mean_ug_m3": 6.95,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 31.96,
      "regional_daily_mean_ug_m3": 32.3,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.21,
      "regional_daily_mean_ug_m3": 15.72,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.74,
      "regional_daily_mean_ug_m3": 6.75,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.93,
      "regional_daily_mean_ug_m3": 13.96,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.22,
      "regional_daily_mean_ug_m3": 6.79,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.28,
      "regional_daily_mean_ug_m3": 3.49,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.17,
      "regional_daily_mean_ug_m3": 20.09,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.64,
      "regional_daily_mean_ug_m3": 17.49,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.09,
      "regional_daily_mean_ug_m3": 12.26,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.77,
      "regional_daily_mean_ug_m3": 24.05,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.16,
      "regional_daily_mean_ug_m3": 12.35,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.89,
      "regional_daily_mean_ug_m3": 6.24,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.96,
      "regional_daily_mean_ug_m3": 16.46,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.96,
      "regional_daily_mean_ug_m3": 8.82,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.67,
      "regional_daily_mean_ug_m3": 4.7,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.88,
      "regional_daily_mean_ug_m3": 21.49,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.41,
      "regional_daily_mean_ug_m3": 12.63,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.24,
      "regional_daily_mean_ug_m3": 6.64,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.26,
      "regional_daily_mean_ug_m3": 19.29,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.71,
      "regional_daily_mean_ug_m3": 11.55,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-22",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.16,
      "regional_daily_mean_ug_m3": 6.24,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.97,
      "regional_daily_mean_ug_m3": 19.2,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.93,
      "regional_daily_mean_ug_m3": 10.14,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.08,
      "regional_daily_mean_ug_m3": 5.12,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.44,
      "regional_daily_mean_ug_m3": 15.93,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.66,
      "regional_daily_mean_ug_m3": 10.82,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.05,
      "regional_daily_mean_ug_m3": 5.57,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.69,
      "regional_daily_mean_ug_m3": 22.21,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.12,
      "regional_daily_mean_ug_m3": 12.86,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.26,
      "regional_daily_mean_ug_m3": 5.56,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.68,
      "regional_daily_mean_ug_m3": 15.4,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.45,
      "regional_daily_mean_ug_m3": 8.26,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.7,
      "regional_daily_mean_ug_m3": 4.7,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.58,
      "regional_daily_mean_ug_m3": 14.53,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.1,
      "regional_daily_mean_ug_m3": 13.93,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.63,
      "regional_daily_mean_ug_m3": 8.73,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.97,
      "regional_daily_mean_ug_m3": 16.8,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.97,
      "regional_daily_mean_ug_m3": 11.36,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.13,
      "regional_daily_mean_ug_m3": 5.24,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.3,
      "regional_daily_mean_ug_m3": 16.25,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.81,
      "regional_daily_mean_ug_m3": 8.58,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.9,
      "regional_daily_mean_ug_m3": 4.97,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.69,
      "regional_daily_mean_ug_m3": 16.32,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.54,
      "regional_daily_mean_ug_m3": 11.34,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.52,
      "regional_daily_mean_ug_m3": 6.07,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.48,
      "regional_daily_mean_ug_m3": 15.27,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.2,
      "regional_daily_mean_ug_m3": 11.26,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-23",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.78,
      "regional_daily_mean_ug_m3": 6.19,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.44,
      "regional_daily_mean_ug_m3": 21.22,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.12,
      "regional_daily_mean_ug_m3": 12.08,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.13,
      "regional_daily_mean_ug_m3": 5.4,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.98,
      "regional_daily_mean_ug_m3": 19.32,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.76,
      "regional_daily_mean_ug_m3": 11.07,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.79,
      "regional_daily_mean_ug_m3": 5.06,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 27.21,
      "regional_daily_mean_ug_m3": 26.83,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.68,
      "regional_daily_mean_ug_m3": 13.81,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.1,
      "regional_daily_mean_ug_m3": 5.33,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.87,
      "regional_daily_mean_ug_m3": 18.24,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.29,
      "regional_daily_mean_ug_m3": 10.71,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.79,
      "regional_daily_mean_ug_m3": 5.16,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.4,
      "regional_daily_mean_ug_m3": 17.41,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.05,
      "regional_daily_mean_ug_m3": 12.61,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.1,
      "regional_daily_mean_ug_m3": 6.42,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.68,
      "regional_daily_mean_ug_m3": 15.9,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.09,
      "regional_daily_mean_ug_m3": 11.93,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.11,
      "regional_daily_mean_ug_m3": 5.22,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.44,
      "regional_daily_mean_ug_m3": 16.24,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.09,
      "regional_daily_mean_ug_m3": 12.27,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.77,
      "regional_daily_mean_ug_m3": 6.63,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.44,
      "regional_daily_mean_ug_m3": 21.73,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.88,
      "regional_daily_mean_ug_m3": 12.39,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.63,
      "regional_daily_mean_ug_m3": 5.99,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.71,
      "regional_daily_mean_ug_m3": 20.52,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.22,
      "regional_daily_mean_ug_m3": 14.41,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-24",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.81,
      "regional_daily_mean_ug_m3": 6.37,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.16,
      "regional_daily_mean_ug_m3": 20.79,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.16,
      "regional_daily_mean_ug_m3": 10.6,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.91,
      "regional_daily_mean_ug_m3": 6.39,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.9,
      "regional_daily_mean_ug_m3": 20.82,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.23,
      "regional_daily_mean_ug_m3": 12.61,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.12,
      "regional_daily_mean_ug_m3": 6.79,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 23.72,
      "regional_daily_mean_ug_m3": 24.63,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.04,
      "regional_daily_mean_ug_m3": 16.24,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.3,
      "regional_daily_mean_ug_m3": 8.14,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.39,
      "regional_daily_mean_ug_m3": 14.35,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.38,
      "regional_daily_mean_ug_m3": 9.74,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.69,
      "regional_daily_mean_ug_m3": 5.21,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.92,
      "regional_daily_mean_ug_m3": 16.58,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.62,
      "regional_daily_mean_ug_m3": 10.12,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.27,
      "regional_daily_mean_ug_m3": 5.52,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.98,
      "regional_daily_mean_ug_m3": 16.58,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.89,
      "regional_daily_mean_ug_m3": 14.29,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.82,
      "regional_daily_mean_ug_m3": 6.85,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.09,
      "regional_daily_mean_ug_m3": 15.45,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.89,
      "regional_daily_mean_ug_m3": 11.26,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.33,
      "regional_daily_mean_ug_m3": 6.4,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.62,
      "regional_daily_mean_ug_m3": 17.64,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.33,
      "regional_daily_mean_ug_m3": 11.24,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.84,
      "regional_daily_mean_ug_m3": 7.29,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.7,
      "regional_daily_mean_ug_m3": 19.49,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.32,
      "regional_daily_mean_ug_m3": 11.21,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-25",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.25,
      "regional_daily_mean_ug_m3": 6.15,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.44,
      "regional_daily_mean_ug_m3": 21.26,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.07,
      "regional_daily_mean_ug_m3": 12.17,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.95,
      "regional_daily_mean_ug_m3": 6.73,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.84,
      "regional_daily_mean_ug_m3": 20.41,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.64,
      "regional_daily_mean_ug_m3": 10.96,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.46,
      "regional_daily_mean_ug_m3": 5.78,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.07,
      "regional_daily_mean_ug_m3": 22.54,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.99,
      "regional_daily_mean_ug_m3": 11.34,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.53,
      "regional_daily_mean_ug_m3": 5.43,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.87,
      "regional_daily_mean_ug_m3": 11.89,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.8,
      "regional_daily_mean_ug_m3": 11.87,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.54,
      "regional_daily_mean_ug_m3": 6.11,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.39,
      "regional_daily_mean_ug_m3": 15.26,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.84,
      "regional_daily_mean_ug_m3": 12.97,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.83,
      "regional_daily_mean_ug_m3": 6.71,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.12,
      "regional_daily_mean_ug_m3": 17.54,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.16,
      "regional_daily_mean_ug_m3": 10.14,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.85,
      "regional_daily_mean_ug_m3": 5.02,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.27,
      "regional_daily_mean_ug_m3": 14.65,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.47,
      "regional_daily_mean_ug_m3": 12.05,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.63,
      "regional_daily_mean_ug_m3": 6.09,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.82,
      "regional_daily_mean_ug_m3": 19.16,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.14,
      "regional_daily_mean_ug_m3": 11.43,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.59,
      "regional_daily_mean_ug_m3": 5.84,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.71,
      "regional_daily_mean_ug_m3": 19.21,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.59,
      "regional_daily_mean_ug_m3": 13.41,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-26",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.98,
      "regional_daily_mean_ug_m3": 7.04,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.99,
      "regional_daily_mean_ug_m3": 16.41,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.28,
      "regional_daily_mean_ug_m3": 10.97,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.11,
      "regional_daily_mean_ug_m3": 6.3,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.17,
      "regional_daily_mean_ug_m3": 11.91,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.77,
      "regional_daily_mean_ug_m3": 11.67,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.91,
      "regional_daily_mean_ug_m3": 6.77,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.72,
      "regional_daily_mean_ug_m3": 19.14,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.28,
      "regional_daily_mean_ug_m3": 12.63,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.7,
      "regional_daily_mean_ug_m3": 6.75,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.65,
      "regional_daily_mean_ug_m3": 12.18,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.64,
      "regional_daily_mean_ug_m3": 10.92,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.36,
      "regional_daily_mean_ug_m3": 6.38,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.24,
      "regional_daily_mean_ug_m3": 10.6,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.87,
      "regional_daily_mean_ug_m3": 10.32,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.59,
      "regional_daily_mean_ug_m3": 5.65,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.49,
      "regional_daily_mean_ug_m3": 11.49,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.74,
      "regional_daily_mean_ug_m3": 12.64,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.39,
      "regional_daily_mean_ug_m3": 6.48,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.09,
      "regional_daily_mean_ug_m3": 9.72,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.32,
      "regional_daily_mean_ug_m3": 11.57,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.14,
      "regional_daily_mean_ug_m3": 5.44,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.68,
      "regional_daily_mean_ug_m3": 14.01,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.15,
      "regional_daily_mean_ug_m3": 10.5,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.64,
      "regional_daily_mean_ug_m3": 5.75,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.75,
      "regional_daily_mean_ug_m3": 15.33,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.84,
      "regional_daily_mean_ug_m3": 12.33,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-27",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.8,
      "regional_daily_mean_ug_m3": 6.91,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.79,
      "regional_daily_mean_ug_m3": 19.19,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.54,
      "regional_daily_mean_ug_m3": 10.38,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.81,
      "regional_daily_mean_ug_m3": 4.72,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.24,
      "regional_daily_mean_ug_m3": 16.81,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.74,
      "regional_daily_mean_ug_m3": 8.83,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.83,
      "regional_daily_mean_ug_m3": 3.98,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.7,
      "regional_daily_mean_ug_m3": 18.96,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.03,
      "regional_daily_mean_ug_m3": 11.57,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.96,
      "regional_daily_mean_ug_m3": 4.02,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.53,
      "regional_daily_mean_ug_m3": 17.53,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.73,
      "regional_daily_mean_ug_m3": 10.8,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.27,
      "regional_daily_mean_ug_m3": 5.35,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.44,
      "regional_daily_mean_ug_m3": 19.52,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.87,
      "regional_daily_mean_ug_m3": 11.97,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.44,
      "regional_daily_mean_ug_m3": 5.84,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.13,
      "regional_daily_mean_ug_m3": 16.61,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.96,
      "regional_daily_mean_ug_m3": 9.26,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.96,
      "regional_daily_mean_ug_m3": 3.94,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.53,
      "regional_daily_mean_ug_m3": 18.28,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.27,
      "regional_daily_mean_ug_m3": 10.33,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.87,
      "regional_daily_mean_ug_m3": 5.05,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.59,
      "regional_daily_mean_ug_m3": 20.12,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.46,
      "regional_daily_mean_ug_m3": 11.17,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.51,
      "regional_daily_mean_ug_m3": 4.66,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.67,
      "regional_daily_mean_ug_m3": 20.74,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.89,
      "regional_daily_mean_ug_m3": 15.09,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-28",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.01,
      "regional_daily_mean_ug_m3": 6.54,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.1,
      "regional_daily_mean_ug_m3": 13.33,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.99,
      "regional_daily_mean_ug_m3": 16.3,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.73,
      "regional_daily_mean_ug_m3": 10.04,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.32,
      "regional_daily_mean_ug_m3": 16.45,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 23.64,
      "regional_daily_mean_ug_m3": 25.02,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 16.2,
      "regional_daily_mean_ug_m3": 16.79,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 24.46,
      "regional_daily_mean_ug_m3": 23.14,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 19.07,
      "regional_daily_mean_ug_m3": 19.33,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.05,
      "regional_daily_mean_ug_m3": 12.1,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.4,
      "regional_daily_mean_ug_m3": 16.78,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.52,
      "regional_daily_mean_ug_m3": 15.44,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.27,
      "regional_daily_mean_ug_m3": 9.15,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.52,
      "regional_daily_mean_ug_m3": 11.46,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.75,
      "regional_daily_mean_ug_m3": 12.75,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.17,
      "regional_daily_mean_ug_m3": 7.31,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.69,
      "regional_daily_mean_ug_m3": 13.77,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 19.83,
      "regional_daily_mean_ug_m3": 19.14,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.61,
      "regional_daily_mean_ug_m3": 10.97,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.94,
      "regional_daily_mean_ug_m3": 11.63,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.86,
      "regional_daily_mean_ug_m3": 16.17,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.44,
      "regional_daily_mean_ug_m3": 8.28,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.11,
      "regional_daily_mean_ug_m3": 14.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.62,
      "regional_daily_mean_ug_m3": 13.9,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.91,
      "regional_daily_mean_ug_m3": 8.03,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.85,
      "regional_daily_mean_ug_m3": 18.87,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 18.96,
      "regional_daily_mean_ug_m3": 19.75,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-29",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.27,
      "regional_daily_mean_ug_m3": 10.97,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.73,
      "regional_daily_mean_ug_m3": 15.53,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.0,
      "regional_daily_mean_ug_m3": 14.02,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.35,
      "regional_daily_mean_ug_m3": 7.57,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.22,
      "regional_daily_mean_ug_m3": 14.24,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.02,
      "regional_daily_mean_ug_m3": 14.96,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.66,
      "regional_daily_mean_ug_m3": 7.21,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.54,
      "regional_daily_mean_ug_m3": 19.94,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.19,
      "regional_daily_mean_ug_m3": 14.58,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.39,
      "regional_daily_mean_ug_m3": 6.39,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.96,
      "regional_daily_mean_ug_m3": 14.98,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 16.88,
      "regional_daily_mean_ug_m3": 17.07,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.14,
      "regional_daily_mean_ug_m3": 11.04,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.95,
      "regional_daily_mean_ug_m3": 12.47,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.59,
      "regional_daily_mean_ug_m3": 10.28,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.19,
      "regional_daily_mean_ug_m3": 5.88,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.06,
      "regional_daily_mean_ug_m3": 12.81,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.46,
      "regional_daily_mean_ug_m3": 14.25,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.15,
      "regional_daily_mean_ug_m3": 6.29,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.14,
      "regional_daily_mean_ug_m3": 8.62,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.2,
      "regional_daily_mean_ug_m3": 14.12,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.14,
      "regional_daily_mean_ug_m3": 6.16,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.72,
      "regional_daily_mean_ug_m3": 11.83,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.72,
      "regional_daily_mean_ug_m3": 11.36,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.62,
      "regional_daily_mean_ug_m3": 5.68,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.43,
      "regional_daily_mean_ug_m3": 19.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 17.68,
      "regional_daily_mean_ug_m3": 18.5,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-30",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.17,
      "regional_daily_mean_ug_m3": 11.21,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.68,
      "regional_daily_mean_ug_m3": 20.92,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.66,
      "regional_daily_mean_ug_m3": 8.93,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.18,
      "regional_daily_mean_ug_m3": 4.55,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.83,
      "regional_daily_mean_ug_m3": 16.32,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.91,
      "regional_daily_mean_ug_m3": 8.65,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.3,
      "regional_daily_mean_ug_m3": 4.24,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.87,
      "regional_daily_mean_ug_m3": 18.27,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.37,
      "regional_daily_mean_ug_m3": 10.41,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.46,
      "regional_daily_mean_ug_m3": 4.47,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.46,
      "regional_daily_mean_ug_m3": 14.0,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.98,
      "regional_daily_mean_ug_m3": 11.74,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.87,
      "regional_daily_mean_ug_m3": 5.12,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.83,
      "regional_daily_mean_ug_m3": 14.29,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.31,
      "regional_daily_mean_ug_m3": 12.07,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.57,
      "regional_daily_mean_ug_m3": 5.7,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.04,
      "regional_daily_mean_ug_m3": 16.53,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.63,
      "regional_daily_mean_ug_m3": 11.58,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.91,
      "regional_daily_mean_ug_m3": 5.03,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.52,
      "regional_daily_mean_ug_m3": 12.34,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.38,
      "regional_daily_mean_ug_m3": 11.98,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.79,
      "regional_daily_mean_ug_m3": 4.63,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.36,
      "regional_daily_mean_ug_m3": 14.44,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.32,
      "regional_daily_mean_ug_m3": 9.68,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.28,
      "regional_daily_mean_ug_m3": 4.58,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.31,
      "regional_daily_mean_ug_m3": 18.76,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.53,
      "regional_daily_mean_ug_m3": 11.91,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-01",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.42,
      "regional_daily_mean_ug_m3": 5.69,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.53,
      "regional_daily_mean_ug_m3": 15.64,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.87,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.67,
      "regional_daily_mean_ug_m3": 4.91,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.79,
      "regional_daily_mean_ug_m3": 13.89,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.49,
      "regional_daily_mean_ug_m3": 10.66,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.66,
      "regional_daily_mean_ug_m3": 4.7,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 23.29,
      "regional_daily_mean_ug_m3": 24.4,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.61,
      "regional_daily_mean_ug_m3": 13.53,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.8,
      "regional_daily_mean_ug_m3": 5.57,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.54,
      "regional_daily_mean_ug_m3": 11.49,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.82,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.96,
      "regional_daily_mean_ug_m3": 4.25,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.54,
      "regional_daily_mean_ug_m3": 9.24,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.79,
      "regional_daily_mean_ug_m3": 9.75,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.46,
      "regional_daily_mean_ug_m3": 4.76,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.75,
      "regional_daily_mean_ug_m3": 18.03,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.19,
      "regional_daily_mean_ug_m3": 10.97,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.42,
      "regional_daily_mean_ug_m3": 4.61,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.46,
      "regional_daily_mean_ug_m3": 10.65,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.16,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.19,
      "regional_daily_mean_ug_m3": 4.15,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.95,
      "regional_daily_mean_ug_m3": 10.84,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.43,
      "regional_daily_mean_ug_m3": 9.81,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.33,
      "regional_daily_mean_ug_m3": 4.46,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.31,
      "regional_daily_mean_ug_m3": 14.15,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.27,
      "regional_daily_mean_ug_m3": 11.97,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-02",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.2,
      "regional_daily_mean_ug_m3": 5.23,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.36,
      "regional_daily_mean_ug_m3": 20.02,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.19,
      "regional_daily_mean_ug_m3": 9.51,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.53,
      "regional_daily_mean_ug_m3": 5.57,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 24.36,
      "regional_daily_mean_ug_m3": 23.51,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.04,
      "regional_daily_mean_ug_m3": 9.59,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.47,
      "regional_daily_mean_ug_m3": 5.43,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 24.83,
      "regional_daily_mean_ug_m3": 24.42,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.23,
      "regional_daily_mean_ug_m3": 10.0,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.24,
      "regional_daily_mean_ug_m3": 5.87,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.41,
      "regional_daily_mean_ug_m3": 11.93,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.04,
      "regional_daily_mean_ug_m3": 9.58,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.25,
      "regional_daily_mean_ug_m3": 4.47,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.41,
      "regional_daily_mean_ug_m3": 16.62,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.64,
      "regional_daily_mean_ug_m3": 11.3,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.26,
      "regional_daily_mean_ug_m3": 5.68,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.7,
      "regional_daily_mean_ug_m3": 22.4,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.43,
      "regional_daily_mean_ug_m3": 10.49,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.94,
      "regional_daily_mean_ug_m3": 5.29,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.19,
      "regional_daily_mean_ug_m3": 16.41,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.2,
      "regional_daily_mean_ug_m3": 8.55,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.01,
      "regional_daily_mean_ug_m3": 4.4,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.47,
      "regional_daily_mean_ug_m3": 18.13,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.85,
      "regional_daily_mean_ug_m3": 8.89,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.14,
      "regional_daily_mean_ug_m3": 4.98,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.25,
      "regional_daily_mean_ug_m3": 17.95,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.78,
      "regional_daily_mean_ug_m3": 11.25,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-03",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.26,
      "regional_daily_mean_ug_m3": 5.4,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.25,
      "regional_daily_mean_ug_m3": 17.37,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.84,
      "regional_daily_mean_ug_m3": 8.89,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.26,
      "regional_daily_mean_ug_m3": 5.5,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.26,
      "regional_daily_mean_ug_m3": 21.85,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.29,
      "regional_daily_mean_ug_m3": 9.3,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.02,
      "regional_daily_mean_ug_m3": 6.47,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 27.84,
      "regional_daily_mean_ug_m3": 28.48,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.94,
      "regional_daily_mean_ug_m3": 9.95,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.13,
      "regional_daily_mean_ug_m3": 7.31,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.0,
      "regional_daily_mean_ug_m3": 9.32,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.78,
      "regional_daily_mean_ug_m3": 6.42,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.29,
      "regional_daily_mean_ug_m3": 3.26,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.07,
      "regional_daily_mean_ug_m3": 15.44,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.66,
      "regional_daily_mean_ug_m3": 8.95,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.96,
      "regional_daily_mean_ug_m3": 5.23,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.9,
      "regional_daily_mean_ug_m3": 16.58,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.19,
      "regional_daily_mean_ug_m3": 8.75,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.96,
      "regional_daily_mean_ug_m3": 5.16,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.13,
      "regional_daily_mean_ug_m3": 11.23,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.25,
      "regional_daily_mean_ug_m3": 6.81,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.89,
      "regional_daily_mean_ug_m3": 3.92,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.79,
      "regional_daily_mean_ug_m3": 16.53,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.46,
      "regional_daily_mean_ug_m3": 8.85,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.22,
      "regional_daily_mean_ug_m3": 5.73,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.33,
      "regional_daily_mean_ug_m3": 18.39,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.51,
      "regional_daily_mean_ug_m3": 10.26,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-04",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.61,
      "regional_daily_mean_ug_m3": 5.75,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.49,
      "regional_daily_mean_ug_m3": 12.98,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.19,
      "regional_daily_mean_ug_m3": 4.78,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.73,
      "regional_daily_mean_ug_m3": 1.99,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.97,
      "regional_daily_mean_ug_m3": 14.33,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.15,
      "regional_daily_mean_ug_m3": 7.01,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.67,
      "regional_daily_mean_ug_m3": 2.98,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.45,
      "regional_daily_mean_ug_m3": 18.09,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.23,
      "regional_daily_mean_ug_m3": 7.78,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.04,
      "regional_daily_mean_ug_m3": 3.96,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.54,
      "regional_daily_mean_ug_m3": 6.36,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 3.64,
      "regional_daily_mean_ug_m3": 3.93,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.46,
      "regional_daily_mean_ug_m3": 1.62,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.25,
      "regional_daily_mean_ug_m3": 10.43,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.26,
      "regional_daily_mean_ug_m3": 5.08,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.89,
      "regional_daily_mean_ug_m3": 2.42,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.45,
      "regional_daily_mean_ug_m3": 15.84,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.72,
      "regional_daily_mean_ug_m3": 8.32,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.45,
      "regional_daily_mean_ug_m3": 4.43,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.46,
      "regional_daily_mean_ug_m3": 10.75,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 3.89,
      "regional_daily_mean_ug_m3": 4.42,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.84,
      "regional_daily_mean_ug_m3": 2.6,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.95,
      "regional_daily_mean_ug_m3": 10.7,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 3.41,
      "regional_daily_mean_ug_m3": 3.49,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.36,
      "regional_daily_mean_ug_m3": 1.3,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.12,
      "regional_daily_mean_ug_m3": 12.47,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.76,
      "regional_daily_mean_ug_m3": 6.16,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-05",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.29,
      "regional_daily_mean_ug_m3": 2.43,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.54,
      "regional_daily_mean_ug_m3": 19.03,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.67,
      "regional_daily_mean_ug_m3": 11.29,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.39,
      "regional_daily_mean_ug_m3": 6.06,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 23.93,
      "regional_daily_mean_ug_m3": 23.27,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.89,
      "regional_daily_mean_ug_m3": 7.92,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.36,
      "regional_daily_mean_ug_m3": 4.31,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 32.53,
      "regional_daily_mean_ug_m3": 31.3,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.12,
      "regional_daily_mean_ug_m3": 11.76,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.89,
      "regional_daily_mean_ug_m3": 5.92,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.11,
      "regional_daily_mean_ug_m3": 17.78,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.71,
      "regional_daily_mean_ug_m3": 8.96,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.75,
      "regional_daily_mean_ug_m3": 4.49,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.73,
      "regional_daily_mean_ug_m3": 13.63,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.95,
      "regional_daily_mean_ug_m3": 6.81,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.02,
      "regional_daily_mean_ug_m3": 3.32,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.12,
      "regional_daily_mean_ug_m3": 19.16,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.05,
      "regional_daily_mean_ug_m3": 9.51,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.92,
      "regional_daily_mean_ug_m3": 5.1,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.47,
      "regional_daily_mean_ug_m3": 19.01,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.73,
      "regional_daily_mean_ug_m3": 6.73,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.78,
      "regional_daily_mean_ug_m3": 3.82,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.77,
      "regional_daily_mean_ug_m3": 18.38,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.89,
      "regional_daily_mean_ug_m3": 7.21,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.71,
      "regional_daily_mean_ug_m3": 4.0,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.85,
      "regional_daily_mean_ug_m3": 15.49,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.76,
      "regional_daily_mean_ug_m3": 8.64,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-06",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.38,
      "regional_daily_mean_ug_m3": 4.71,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.64,
      "regional_daily_mean_ug_m3": 16.56,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.7,
      "regional_daily_mean_ug_m3": 7.44,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.2,
      "regional_daily_mean_ug_m3": 4.24,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.78,
      "regional_daily_mean_ug_m3": 17.39,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.46,
      "regional_daily_mean_ug_m3": 7.64,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.49,
      "regional_daily_mean_ug_m3": 4.74,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.46,
      "regional_daily_mean_ug_m3": 20.61,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.55,
      "regional_daily_mean_ug_m3": 9.93,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.7,
      "regional_daily_mean_ug_m3": 6.89,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.5,
      "regional_daily_mean_ug_m3": 13.78,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.98,
      "regional_daily_mean_ug_m3": 7.04,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.9,
      "regional_daily_mean_ug_m3": 3.24,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.67,
      "regional_daily_mean_ug_m3": 9.79,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.07,
      "regional_daily_mean_ug_m3": 6.48,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.66,
      "regional_daily_mean_ug_m3": 2.98,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.43,
      "regional_daily_mean_ug_m3": 15.92,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.14,
      "regional_daily_mean_ug_m3": 10.16,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.54,
      "regional_daily_mean_ug_m3": 6.43,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.45,
      "regional_daily_mean_ug_m3": 12.68,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.06,
      "regional_daily_mean_ug_m3": 7.57,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.48,
      "regional_daily_mean_ug_m3": 3.97,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.83,
      "regional_daily_mean_ug_m3": 11.68,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.42,
      "regional_daily_mean_ug_m3": 6.6,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.9,
      "regional_daily_mean_ug_m3": 3.85,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.98,
      "regional_daily_mean_ug_m3": 12.35,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.17,
      "regional_daily_mean_ug_m3": 6.19,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-07",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.84,
      "regional_daily_mean_ug_m3": 3.24,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.1,
      "regional_daily_mean_ug_m3": 15.01,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.41,
      "regional_daily_mean_ug_m3": 5.77,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.69,
      "regional_daily_mean_ug_m3": 2.63,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.9,
      "regional_daily_mean_ug_m3": 16.19,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.04,
      "regional_daily_mean_ug_m3": 5.13,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.39,
      "regional_daily_mean_ug_m3": 2.51,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.07,
      "regional_daily_mean_ug_m3": 16.25,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.94,
      "regional_daily_mean_ug_m3": 6.48,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.22,
      "regional_daily_mean_ug_m3": 3.08,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.56,
      "regional_daily_mean_ug_m3": 10.48,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.45,
      "regional_daily_mean_ug_m3": 5.32,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.99,
      "regional_daily_mean_ug_m3": 2.44,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.77,
      "regional_daily_mean_ug_m3": 13.37,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.88,
      "regional_daily_mean_ug_m3": 7.56,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.99,
      "regional_daily_mean_ug_m3": 3.34,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.61,
      "regional_daily_mean_ug_m3": 13.89,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.33,
      "regional_daily_mean_ug_m3": 7.27,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.95,
      "regional_daily_mean_ug_m3": 3.25,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.86,
      "regional_daily_mean_ug_m3": 11.87,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.34,
      "regional_daily_mean_ug_m3": 9.65,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.37,
      "regional_daily_mean_ug_m3": 3.81,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.14,
      "regional_daily_mean_ug_m3": 13.47,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.37,
      "regional_daily_mean_ug_m3": 7.41,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.67,
      "regional_daily_mean_ug_m3": 3.56,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.8,
      "regional_daily_mean_ug_m3": 12.59,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.59,
      "regional_daily_mean_ug_m3": 6.08,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-08",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.46,
      "regional_daily_mean_ug_m3": 2.91,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.86,
      "regional_daily_mean_ug_m3": 9.56,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.08,
      "regional_daily_mean_ug_m3": 5.42,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.4,
      "regional_daily_mean_ug_m3": 2.45,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.88,
      "regional_daily_mean_ug_m3": 9.26,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.7,
      "regional_daily_mean_ug_m3": 4.88,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.32,
      "regional_daily_mean_ug_m3": 2.35,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.91,
      "regional_daily_mean_ug_m3": 11.78,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.41,
      "regional_daily_mean_ug_m3": 5.92,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.8,
      "regional_daily_mean_ug_m3": 2.69,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.76,
      "regional_daily_mean_ug_m3": 6.79,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 4.97,
      "regional_daily_mean_ug_m3": 5.41,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.38,
      "regional_daily_mean_ug_m3": 2.5,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.34,
      "regional_daily_mean_ug_m3": 7.13,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.49,
      "regional_daily_mean_ug_m3": 8.82,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.68,
      "regional_daily_mean_ug_m3": 4.17,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.96,
      "regional_daily_mean_ug_m3": 8.85,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.72,
      "regional_daily_mean_ug_m3": 7.82,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.27,
      "regional_daily_mean_ug_m3": 3.4,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.51,
      "regional_daily_mean_ug_m3": 5.99,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.83,
      "regional_daily_mean_ug_m3": 8.91,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.59,
      "regional_daily_mean_ug_m3": 3.64,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.28,
      "regional_daily_mean_ug_m3": 8.08,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.01,
      "regional_daily_mean_ug_m3": 5.1,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.29,
      "regional_daily_mean_ug_m3": 2.38,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.48,
      "regional_daily_mean_ug_m3": 8.87,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.84,
      "regional_daily_mean_ug_m3": 6.49,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-09",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.52,
      "regional_daily_mean_ug_m3": 2.84,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.66,
      "regional_daily_mean_ug_m3": 9.05,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.08,
      "regional_daily_mean_ug_m3": 7.21,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.83,
      "regional_daily_mean_ug_m3": 3.84,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.46,
      "regional_daily_mean_ug_m3": 10.44,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.72,
      "regional_daily_mean_ug_m3": 6.68,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.44,
      "regional_daily_mean_ug_m3": 3.44,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.3,
      "regional_daily_mean_ug_m3": 12.97,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.25,
      "regional_daily_mean_ug_m3": 7.62,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.93,
      "regional_daily_mean_ug_m3": 3.8,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 3.33,
      "regional_daily_mean_ug_m3": 3.98,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.45,
      "regional_daily_mean_ug_m3": 7.69,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.38,
      "regional_daily_mean_ug_m3": 3.51,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.0,
      "regional_daily_mean_ug_m3": 6.04,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.89,
      "regional_daily_mean_ug_m3": 11.63,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.37,
      "regional_daily_mean_ug_m3": 5.64,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.59,
      "regional_daily_mean_ug_m3": 11.11,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.14,
      "regional_daily_mean_ug_m3": 8.73,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.8,
      "regional_daily_mean_ug_m3": 4.13,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.9,
      "regional_daily_mean_ug_m3": 8.03,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.36,
      "regional_daily_mean_ug_m3": 9.49,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.31,
      "regional_daily_mean_ug_m3": 4.48,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.33,
      "regional_daily_mean_ug_m3": 7.56,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.47,
      "regional_daily_mean_ug_m3": 7.47,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.74,
      "regional_daily_mean_ug_m3": 3.7,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.67,
      "regional_daily_mean_ug_m3": 7.28,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.77,
      "regional_daily_mean_ug_m3": 9.94,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-10",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.73,
      "regional_daily_mean_ug_m3": 4.88,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.86,
      "regional_daily_mean_ug_m3": 16.44,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.92,
      "regional_daily_mean_ug_m3": 9.05,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.08,
      "regional_daily_mean_ug_m3": 5.07,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.61,
      "regional_daily_mean_ug_m3": 15.1,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.08,
      "regional_daily_mean_ug_m3": 7.29,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.97,
      "regional_daily_mean_ug_m3": 4.01,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.75,
      "regional_daily_mean_ug_m3": 19.64,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.89,
      "regional_daily_mean_ug_m3": 6.83,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.77,
      "regional_daily_mean_ug_m3": 3.79,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.83,
      "regional_daily_mean_ug_m3": 13.23,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.03,
      "regional_daily_mean_ug_m3": 9.5,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.66,
      "regional_daily_mean_ug_m3": 4.83,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.48,
      "regional_daily_mean_ug_m3": 13.39,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.53,
      "regional_daily_mean_ug_m3": 10.11,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.88,
      "regional_daily_mean_ug_m3": 5.05,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.11,
      "regional_daily_mean_ug_m3": 13.28,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.4,
      "regional_daily_mean_ug_m3": 7.31,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.4,
      "regional_daily_mean_ug_m3": 3.64,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.53,
      "regional_daily_mean_ug_m3": 10.35,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.15,
      "regional_daily_mean_ug_m3": 7.28,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.53,
      "regional_daily_mean_ug_m3": 3.37,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.81,
      "regional_daily_mean_ug_m3": 14.06,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.54,
      "regional_daily_mean_ug_m3": 7.42,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.33,
      "regional_daily_mean_ug_m3": 3.93,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.54,
      "regional_daily_mean_ug_m3": 17.27,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.98,
      "regional_daily_mean_ug_m3": 13.09,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-10-11",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.07,
      "regional_daily_mean_ug_m3": 7.34,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    }
  ],
  "daily_national_statistics": [
    {
      "date": "2026-09-12",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.75,
      "national_station_mean_ug_m3": 10.67,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-09-12",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.44,
      "national_station_mean_ug_m3": 9.01,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-12",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.55,
      "national_station_mean_ug_m3": 5.08,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-13",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.92,
      "national_station_mean_ug_m3": 10.5,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-09-13",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.67,
      "national_station_mean_ug_m3": 7.16,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-13",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.07,
      "national_station_mean_ug_m3": 4.1,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-14",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.23,
      "national_station_mean_ug_m3": 10.24,
      "reporting_stations": 93,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-14",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.19,
      "national_station_mean_ug_m3": 6.23,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-14",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 2.83,
      "national_station_mean_ug_m3": 3.13,
      "reporting_stations": 120,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-15",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.27,
      "national_station_mean_ug_m3": 8.56,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-15",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.18,
      "national_station_mean_ug_m3": 6.69,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-15",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 2.96,
      "national_station_mean_ug_m3": 3.12,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-16",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.21,
      "national_station_mean_ug_m3": 10.4,
      "reporting_stations": 89,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-09-16",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 5.72,
      "national_station_mean_ug_m3": 6.24,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-16",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 2.61,
      "national_station_mean_ug_m3": 2.81,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-17",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.79,
      "national_station_mean_ug_m3": 8.56,
      "reporting_stations": 89,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-17",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.27,
      "national_station_mean_ug_m3": 8.95,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-17",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.97,
      "national_station_mean_ug_m3": 4.25,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-18",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 8.93,
      "national_station_mean_ug_m3": 9.79,
      "reporting_stations": 93,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-09-18",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 16.16,
      "national_station_mean_ug_m3": 16.82,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-18",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 8.7,
      "national_station_mean_ug_m3": 8.92,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-19",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 5.18,
      "national_station_mean_ug_m3": 6.25,
      "reporting_stations": 93,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-19",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.0,
      "national_station_mean_ug_m3": 8.48,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-19",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.89,
      "national_station_mean_ug_m3": 4.32,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-20",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.24,
      "national_station_mean_ug_m3": 9.63,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 2
    },
    {
      "date": "2026-09-20",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 12.95,
      "national_station_mean_ug_m3": 13.16,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-20",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.56,
      "national_station_mean_ug_m3": 6.54,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-21",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 21.17,
      "national_station_mean_ug_m3": 21.66,
      "reporting_stations": 95,
      "reporting_regions": 9,
      "station_days_above_who_reference": 31
    },
    {
      "date": "2026-09-21",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 12.87,
      "national_station_mean_ug_m3": 13.26,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-21",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.55,
      "national_station_mean_ug_m3": 6.56,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-22",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 20.23,
      "national_station_mean_ug_m3": 21.21,
      "reporting_stations": 95,
      "reporting_regions": 9,
      "station_days_above_who_reference": 29
    },
    {
      "date": "2026-09-22",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 11.73,
      "national_station_mean_ug_m3": 12.39,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-22",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.09,
      "national_station_mean_ug_m3": 6.73,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 4
    },
    {
      "date": "2026-09-23",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 15.81,
      "national_station_mean_ug_m3": 16.33,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 6
    },
    {
      "date": "2026-09-23",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 10.65,
      "national_station_mean_ug_m3": 11.13,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-23",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.48,
      "national_station_mean_ug_m3": 5.96,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-24",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 17.77,
      "national_station_mean_ug_m3": 19.23,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 21
    },
    {
      "date": "2026-09-24",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 12.0,
      "national_station_mean_ug_m3": 12.51,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-24",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.63,
      "national_station_mean_ug_m3": 5.86,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-25",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 16.76,
      "national_station_mean_ug_m3": 17.85,
      "reporting_stations": 95,
      "reporting_regions": 9,
      "station_days_above_who_reference": 20
    },
    {
      "date": "2026-09-25",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 11.11,
      "national_station_mean_ug_m3": 11.6,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-25",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.38,
      "national_station_mean_ug_m3": 6.43,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-09-26",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 16.32,
      "national_station_mean_ug_m3": 17.57,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 17
    },
    {
      "date": "2026-09-26",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 11.53,
      "national_station_mean_ug_m3": 11.94,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-26",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.83,
      "national_station_mean_ug_m3": 6.15,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-27",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.4,
      "national_station_mean_ug_m3": 13.02,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 6
    },
    {
      "date": "2026-09-27",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 11.12,
      "national_station_mean_ug_m3": 11.41,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-27",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.15,
      "national_station_mean_ug_m3": 6.2,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-28",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 17.4,
      "national_station_mean_ug_m3": 18.95,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 19
    },
    {
      "date": "2026-09-28",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 10.61,
      "national_station_mean_ug_m3": 11.36,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-28",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.79,
      "national_station_mean_ug_m3": 5.06,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-29",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 12.83,
      "national_station_mean_ug_m3": 14.71,
      "reporting_stations": 95,
      "reporting_regions": 9,
      "station_days_above_who_reference": 7
    },
    {
      "date": "2026-09-29",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 15.82,
      "national_station_mean_ug_m3": 16.71,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-29",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 9.29,
      "national_station_mean_ug_m3": 9.72,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 5
    },
    {
      "date": "2026-09-30",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 12.55,
      "national_station_mean_ug_m3": 13.96,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 8
    },
    {
      "date": "2026-09-30",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 13.57,
      "national_station_mean_ug_m3": 14.11,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-30",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.54,
      "national_station_mean_ug_m3": 7.5,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-10-01",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 14.77,
      "national_station_mean_ug_m3": 15.92,
      "reporting_stations": 93,
      "reporting_regions": 9,
      "station_days_above_who_reference": 9
    },
    {
      "date": "2026-10-01",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 9.92,
      "national_station_mean_ug_m3": 11.0,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-01",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.74,
      "national_station_mean_ug_m3": 5.01,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-10-02",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.83,
      "national_station_mean_ug_m3": 13.27,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 10
    },
    {
      "date": "2026-10-02",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 9.92,
      "national_station_mean_ug_m3": 10.66,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-02",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.56,
      "national_station_mean_ug_m3": 4.7,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-03",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 17.7,
      "national_station_mean_ug_m3": 18.38,
      "reporting_stations": 95,
      "reporting_regions": 9,
      "station_days_above_who_reference": 18
    },
    {
      "date": "2026-10-03",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 9.65,
      "national_station_mean_ug_m3": 10.04,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-03",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.14,
      "national_station_mean_ug_m3": 5.21,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-04",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 15.77,
      "national_station_mean_ug_m3": 16.28,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 14
    },
    {
      "date": "2026-10-04",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.3,
      "national_station_mean_ug_m3": 8.73,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-04",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.06,
      "national_station_mean_ug_m3": 5.24,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-05",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.77,
      "national_station_mean_ug_m3": 11.94,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 2
    },
    {
      "date": "2026-10-05",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 4.72,
      "national_station_mean_ug_m3": 5.47,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-05",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 1.94,
      "national_station_mean_ug_m3": 2.55,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-06",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 16.58,
      "national_station_mean_ug_m3": 18.01,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 20
    },
    {
      "date": "2026-10-06",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.17,
      "national_station_mean_ug_m3": 8.5,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-06",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.56,
      "national_station_mean_ug_m3": 4.53,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-07",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 12.81,
      "national_station_mean_ug_m3": 13.37,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 2
    },
    {
      "date": "2026-10-07",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.68,
      "national_station_mean_ug_m3": 7.46,
      "reporting_stations": 107,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-07",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.67,
      "national_station_mean_ug_m3": 4.2,
      "reporting_stations": 125,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-08",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.72,
      "national_station_mean_ug_m3": 13.33,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-10-08",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.41,
      "national_station_mean_ug_m3": 6.91,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-08",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 2.92,
      "national_station_mean_ug_m3": 3.14,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-09",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.35,
      "national_station_mean_ug_m3": 8.16,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-09",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 5.93,
      "national_station_mean_ug_m3": 6.75,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-09",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 2.66,
      "national_station_mean_ug_m3": 3.04,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-10",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.38,
      "national_station_mean_ug_m3": 7.96,
      "reporting_stations": 96,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-10",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.08,
      "national_station_mean_ug_m3": 8.85,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-10",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.99,
      "national_station_mean_ug_m3": 4.31,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-11",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 13.11,
      "national_station_mean_ug_m3": 14.36,
      "reporting_stations": 93,
      "reporting_regions": 9,
      "station_days_above_who_reference": 7
    },
    {
      "date": "2026-10-11",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.38,
      "national_station_mean_ug_m3": 9.0,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-10-11",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.17,
      "national_station_mean_ug_m3": 4.69,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    }
  ],
  "fixed_panel_statistics": [
    {
      "date": "2026-09-12",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.75,
      "fixed_panel_mean_ug_m3": 10.67,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-12",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.41,
      "fixed_panel_mean_ug_m3": 9.01,
      "fixed_panel_stations": 103,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-12",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.55,
      "fixed_panel_mean_ug_m3": 5.11,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-13",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.92,
      "fixed_panel_mean_ug_m3": 10.43,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-13",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.67,
      "fixed_panel_mean_ug_m3": 7.14,
      "fixed_panel_stations": 103,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-13",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.07,
      "fixed_panel_mean_ug_m3": 4.08,
      "fixed_panel_stations": 119,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-14",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.23,
      "fixed_panel_mean_ug_m3": 10.2,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-14",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.19,
      "fixed_panel_mean_ug_m3": 6.22,
      "fixed_panel_stations": 103,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-14",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 2.83,
      "fixed_panel_mean_ug_m3": 3.12,
      "fixed_panel_stations": 118,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-15",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.09,
      "fixed_panel_mean_ug_m3": 8.46,
      "fixed_panel_stations": 90,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-15",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.2,
      "fixed_panel_mean_ug_m3": 6.73,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-15",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 2.98,
      "fixed_panel_mean_ug_m3": 3.13,
      "fixed_panel_stations": 118,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-16",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.0,
      "fixed_panel_mean_ug_m3": 10.29,
      "fixed_panel_stations": 88,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-16",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 5.72,
      "fixed_panel_mean_ug_m3": 6.25,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-16",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 2.61,
      "fixed_panel_mean_ug_m3": 2.81,
      "fixed_panel_stations": 119,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-17",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.56,
      "fixed_panel_mean_ug_m3": 8.41,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-17",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.29,
      "fixed_panel_mean_ug_m3": 8.99,
      "fixed_panel_stations": 103,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-17",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.97,
      "fixed_panel_mean_ug_m3": 4.28,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-18",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 8.82,
      "fixed_panel_mean_ug_m3": 9.59,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-18",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 16.16,
      "fixed_panel_mean_ug_m3": 16.88,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-18",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 8.7,
      "fixed_panel_mean_ug_m3": 8.94,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-19",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 5.05,
      "fixed_panel_mean_ug_m3": 6.15,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-19",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.01,
      "fixed_panel_mean_ug_m3": 8.52,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-19",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.92,
      "fixed_panel_mean_ug_m3": 4.34,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-20",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.24,
      "fixed_panel_mean_ug_m3": 9.57,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-20",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 12.95,
      "fixed_panel_mean_ug_m3": 13.19,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-20",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.56,
      "fixed_panel_mean_ug_m3": 6.55,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-21",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 21.11,
      "fixed_panel_mean_ug_m3": 21.53,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-21",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 12.85,
      "fixed_panel_mean_ug_m3": 13.23,
      "fixed_panel_stations": 103,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-21",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.55,
      "fixed_panel_mean_ug_m3": 6.59,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-22",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 20.1,
      "fixed_panel_mean_ug_m3": 21.03,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-22",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.63,
      "fixed_panel_mean_ug_m3": 12.36,
      "fixed_panel_stations": 103,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-22",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.09,
      "fixed_panel_mean_ug_m3": 6.76,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-23",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 15.81,
      "fixed_panel_mean_ug_m3": 16.22,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-23",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 10.65,
      "fixed_panel_mean_ug_m3": 11.1,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-23",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.5,
      "fixed_panel_mean_ug_m3": 5.97,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-24",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 17.52,
      "fixed_panel_mean_ug_m3": 18.9,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-24",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.99,
      "fixed_panel_mean_ug_m3": 12.5,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-24",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.63,
      "fixed_panel_mean_ug_m3": 5.86,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-25",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 16.67,
      "fixed_panel_mean_ug_m3": 17.69,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-25",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.13,
      "fixed_panel_mean_ug_m3": 11.66,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-25",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.42,
      "fixed_panel_mean_ug_m3": 6.47,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-26",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 16.32,
      "fixed_panel_mean_ug_m3": 17.53,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-26",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.48,
      "fixed_panel_mean_ug_m3": 11.91,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-26",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.81,
      "fixed_panel_mean_ug_m3": 6.15,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-27",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.4,
      "fixed_panel_mean_ug_m3": 12.88,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-27",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.22,
      "fixed_panel_mean_ug_m3": 11.43,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-27",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.24,
      "fixed_panel_mean_ug_m3": 6.23,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-28",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 17.4,
      "fixed_panel_mean_ug_m3": 18.65,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-28",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 10.59,
      "fixed_panel_mean_ug_m3": 11.34,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-28",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.77,
      "fixed_panel_mean_ug_m3": 5.07,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-29",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 12.84,
      "fixed_panel_mean_ug_m3": 14.65,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-29",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 15.84,
      "fixed_panel_mean_ug_m3": 16.71,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-29",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 9.29,
      "fixed_panel_mean_ug_m3": 9.74,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-30",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 12.61,
      "fixed_panel_mean_ug_m3": 13.81,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-30",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 13.65,
      "fixed_panel_mean_ug_m3": 14.12,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-30",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.66,
      "fixed_panel_mean_ug_m3": 7.53,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-01",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 14.9,
      "fixed_panel_mean_ug_m3": 15.88,
      "fixed_panel_stations": 90,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-01",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 9.89,
      "fixed_panel_mean_ug_m3": 11.02,
      "fixed_panel_stations": 102,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-01",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.72,
      "fixed_panel_mean_ug_m3": 4.99,
      "fixed_panel_stations": 119,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-02",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.9,
      "fixed_panel_mean_ug_m3": 13.32,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-02",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 9.9,
      "fixed_panel_mean_ug_m3": 10.68,
      "fixed_panel_stations": 102,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-02",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.51,
      "fixed_panel_mean_ug_m3": 4.68,
      "fixed_panel_stations": 119,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-03",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 17.7,
      "fixed_panel_mean_ug_m3": 18.3,
      "fixed_panel_stations": 91,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-03",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 9.65,
      "fixed_panel_mean_ug_m3": 10.07,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-03",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.18,
      "fixed_panel_mean_ug_m3": 5.21,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-04",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 15.77,
      "fixed_panel_mean_ug_m3": 16.14,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-04",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.33,
      "fixed_panel_mean_ug_m3": 8.75,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-04",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.06,
      "fixed_panel_mean_ug_m3": 5.24,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-05",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.77,
      "fixed_panel_mean_ug_m3": 11.94,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-05",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 4.81,
      "fixed_panel_mean_ug_m3": 5.53,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-05",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 1.95,
      "fixed_panel_mean_ug_m3": 2.57,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-06",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 16.58,
      "fixed_panel_mean_ug_m3": 17.92,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-06",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.17,
      "fixed_panel_mean_ug_m3": 8.53,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-06",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.57,
      "fixed_panel_mean_ug_m3": 4.55,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-07",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 12.75,
      "fixed_panel_mean_ug_m3": 13.4,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-07",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.69,
      "fixed_panel_mean_ug_m3": 7.48,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-07",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.66,
      "fixed_panel_mean_ug_m3": 4.2,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-08",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.72,
      "fixed_panel_mean_ug_m3": 13.19,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-08",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.41,
      "fixed_panel_mean_ug_m3": 6.93,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-08",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 2.92,
      "fixed_panel_mean_ug_m3": 3.15,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-09",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.35,
      "fixed_panel_mean_ug_m3": 8.08,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-09",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 5.93,
      "fixed_panel_mean_ug_m3": 6.76,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-09",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 2.63,
      "fixed_panel_mean_ug_m3": 3.04,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-10",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.38,
      "fixed_panel_mean_ug_m3": 8.03,
      "fixed_panel_stations": 92,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-10",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.08,
      "fixed_panel_mean_ug_m3": 8.85,
      "fixed_panel_stations": 104,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-10",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.98,
      "fixed_panel_mean_ug_m3": 4.31,
      "fixed_panel_stations": 120,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-11",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 13.11,
      "fixed_panel_mean_ug_m3": 14.1,
      "fixed_panel_stations": 89,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-11",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.3,
      "fixed_panel_mean_ug_m3": 8.98,
      "fixed_panel_stations": 101,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-10-11",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.17,
      "fixed_panel_mean_ug_m3": 4.7,
      "fixed_panel_stations": 118,
      "fixed_panel_regions": 9
    }
  ],
  "configured_stream_contract": [
    {
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MID",
      "uka_id": "UKA00220",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MID",
      "uka_id": "UKA00220",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MID",
      "uka_id": "UKA00220",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLAR",
      "uka_id": "UKA00590",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BLWD",
      "uka_id": "UKA01049",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MIMW",
      "uka_id": "UKA01051",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CW",
      "uka_id": "UKA00579",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TAMM",
      "uka_id": "UKA01099",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WSMR",
      "uka_id": "UKA00603",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BDMA",
      "uka_id": "UKA00611",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LIN3",
      "uka_id": "UKA00561",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LEOM",
      "uka_id": "UKA00489",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WAL4",
      "uka_id": "UKA00565",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WBKP",
      "uka_id": "UKA00658",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CAM",
      "uka_id": "UKA00396",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STGW",
      "uka_id": "UKA01156",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "AYLA",
      "uka_id": "UKA01109",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "OX",
      "uka_id": "UKA00258",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "RRKL",
      "uka_id": "UKA01053",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BHA4",
      "uka_id": "UKA00660",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRIW",
      "uka_id": "UKA01120",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHGR",
      "uka_id": "UKA01101",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "EX",
      "uka_id": "UKA00263",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYR",
      "uka_id": "UKA00629",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    },
    {
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-09-12",
      "period_end": "2026-10-11",
      "expected_station_days": 30
    }
  ],
  "data_posture": "provisional and ratified official AURN automatic measurements, status flags preserved",
  "data_status_counts": {
    "contains_provisional": 9722
  },
  "provisional_or_as_supplied_pollutant_day_observations": 9722,
  "ratified_pollutant_day_observations": 0,
  "who_context_pollutant_day_observations": 270,
  "who_context_pollutant_day_observations_by_pollutant": {
    "NO2": 257,
    "PM10": 0,
    "PM2.5": 13
  },
  "provisional_or_as_supplied_station_days": 9722,
  "ratified_station_days": 0,
  "who_context_station_days": 270,
  "who_context_station_days_by_pollutant": {
    "NO2": 257,
    "PM10": 0,
    "PM2.5": 13
  },
  "who_context_count_definition": "Count of valid pollutant-day observations whose daily mean exceeded the pollutant-specific WHO 2021 24-hour contextual reference. This is not a UK legal exceedance count and is independent of station-period eligibility.",
  "canonical_metrics": {
    "schema": "aq26_england_canonical_metrics_v1",
    "valid_pollutant_day_observations": 9722,
    "unique_station_days": 4216,
    "expected_configured_pollutant_day_observations": 9960,
    "configured_stream_day_completeness_percent": 97.6,
    "provisional_or_as_supplied_pollutant_day_observations": 9722,
    "ratified_pollutant_day_observations": 0,
    "who_context_pollutant_day_observations": 270,
    "who_context_pollutant_day_observations_by_pollutant": {
      "NO2": 257,
      "PM10": 0,
      "PM2.5": 13
    },
    "definitions": {
      "pollutant_day_observation": "One valid station/date/pollutant daily-mean row.",
      "unique_station_day": "One distinct station/date pair with at least one valid pollutant daily mean.",
      "configured_stream_day_completeness": "Valid pollutant-day observations divided by expected configured pollutant-day observations.",
      "who_context_pollutant_day_observation": "A valid pollutant-day observation above the pollutant-specific WHO 2021 24-hour contextual reference; not a UK legal exceedance."
    }
  },
  "geographic_posture": "automatically discovered active English AURN station network; not population weighted and not a direct estimate of personal exposure",
  "claim_boundary": [
    "descriptive observed concentrations and data completeness only",
    "no source attribution or causation",
    "no legal compliance determination",
    "no individual exposure or health-risk determination",
    "regional comparisons are shown only where the multi-station eligibility rule is met"
  ],
  "methodology": {
    "daily_minimum_hourly_observations": 18,
    "station_period_minimum_valid_days": 15,
    "regional_aggregation": "equal-weight median of valid station-daily means",
    "who_2021_24h_context_ug_m3": {
      "PM2.5": 15.0,
      "PM10": 45.0,
      "NO2": 25.0
    },
    "invalid_daily_reference_comparison": "null/not assessed",
    "changing_panel_sensitivity": "daily reporting station and region counts plus fixed-panel series",
    "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
    "hour_ending_24_rule": "24:00 is retained as next-day 00:00 UTC but aggregated to the printed source calendar date",
    "accepted_quality_status_flags": {
      "R": "ratified",
      "P": "provisional",
      "P*": "as supplied"
    }
  },
  "licence": "© Crown copyright Defra via uk-air.defra.gov.uk, licensed under the Open Government Licence.",
  "generated_at_utc": "2026-10-12T17:39:13.558580+00:00",
  "station_discovery": {
    "method": "official active-site selector plus per-site AURN metadata pages",
    "discovered_active_english_sites": 172,
    "minimum_expected_active_english_sites": 75,
    "errors": [],
    "provenance": [
      {
        "stage": "station_search",
        "url": "https://uk-air.defra.gov.uk/networks/search-site-info",
        "http_status": 200,
        "sha256": "7d47d6253e31417d32378e7dce218cd0b60458d6e655be878c68e8dc24ad44ac",
        "byte_count": 38323,
        "retrieved_at_utc": "2026-10-12T17:39:14.267784+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00933",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00933",
        "http_status": 200,
        "sha256": "4d47744789bea631059201dd7e6a84d76aab184343c45851898e6fe084e18b45",
        "byte_count": 28675,
        "retrieved_at_utc": "2026-10-12T17:39:18.231109+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00503",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00503",
        "http_status": 200,
        "sha256": "d682750df3f04f5023e53e5a7193576ef955a94ba45609f8ed8fe15b5598d46b",
        "byte_count": 35829,
        "retrieved_at_utc": "2026-10-12T17:39:19.669064+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00451",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00451",
        "http_status": 200,
        "sha256": "fc121f3d7a6bc6ccdc208ce53c91122ffd9e083bf082390200c5a8f16dcb8ecc",
        "byte_count": 102290,
        "retrieved_at_utc": "2026-10-12T17:39:20.291033+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00633",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00633",
        "http_status": 200,
        "sha256": "e8db1b6c02946c14c69bd87ac5e767441883dc7360d9b18afa3eaed0eace56fd",
        "byte_count": 28382,
        "retrieved_at_utc": "2026-10-12T17:39:20.719020+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01109",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01109",
        "http_status": 200,
        "sha256": "e1e8f780374f11b9043ada1333af5d3ced878c4223f6bc35410fbc42b0be2c80",
        "byte_count": 28027,
        "retrieved_at_utc": "2026-10-12T17:39:21.045960+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00615",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00615",
        "http_status": 200,
        "sha256": "f661caef2589b320a0cab6d51d6804985929669c96eae6e7613edee41923cf9e",
        "byte_count": 29480,
        "retrieved_at_utc": "2026-10-12T17:39:21.065611+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00137",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00137",
        "http_status": 200,
        "sha256": "9aee866ef587032eb12248cf551787d036418fa92224de1005c8327900978827",
        "byte_count": 28572,
        "retrieved_at_utc": "2026-10-12T17:39:21.361050+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01118",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01118",
        "http_status": 200,
        "sha256": "72113325666bc912ced61bf9bf4eacd34e253dca52688aed11be84198c448b0e",
        "byte_count": 27444,
        "retrieved_at_utc": "2026-10-12T17:39:21.782081+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00541",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00541",
        "http_status": 200,
        "sha256": "74aea8c9d80b4b3b72fe7e330048b8aa4eb6eeda9fdba3bf73d315e52019a7de",
        "byte_count": 33293,
        "retrieved_at_utc": "2026-10-12T17:39:21.888129+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00353",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00353",
        "http_status": 200,
        "sha256": "cf4afd6d61ce54b3a0af8940a659af4a24859f1252256d5bed7f3bf8501beaeb",
        "byte_count": 33506,
        "retrieved_at_utc": "2026-10-12T17:39:22.227887+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00625",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00625",
        "http_status": 200,
        "sha256": "eab974068398c07d5106c35f5e2f87ddac1739c94f0b570a78fe59c8278df898",
        "byte_count": 29945,
        "retrieved_at_utc": "2026-10-12T17:39:25.001483+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00574",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00574",
        "http_status": 200,
        "sha256": "c9c70da5c22f8d1d5854b9cc84e2ace05b9eebffb28e1eb6c27a6f5707e5b70e",
        "byte_count": 29841,
        "retrieved_at_utc": "2026-10-12T17:39:25.810071+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00212",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00212",
        "http_status": 200,
        "sha256": "0f0dc183a9246c36597bfd3b87855c37091d4f34a630a2b32827e08d584f8edd",
        "byte_count": 39529,
        "retrieved_at_utc": "2026-10-12T17:39:25.948299+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00660",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00660",
        "http_status": 200,
        "sha256": "d7e80603bd9fdb67ac7042803610547436bb39774c5bb33854cbfa2a3abcb649",
        "byte_count": 30969,
        "retrieved_at_utc": "2026-10-12T17:39:26.011857+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01158",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01158",
        "http_status": 200,
        "sha256": "188d5632bc54f9523446b883a49c1f393d368340b718ba31eabc25e839d83365",
        "byte_count": 27442,
        "retrieved_at_utc": "2026-10-12T17:39:26.958819+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00594",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00594",
        "http_status": 200,
        "sha256": "718d0e1e9b3184d98abe1f1bd7b0bfedef1eecba8e379981362405ad2ed49b82",
        "byte_count": 28815,
        "retrieved_at_utc": "2026-10-12T17:39:27.160886+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00626",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00626",
        "http_status": 200,
        "sha256": "fdaa2a6cf41cf5cd3ecba2876e46ba8017181c540fac1d2922cb6a811186de4d",
        "byte_count": 35152,
        "retrieved_at_utc": "2026-10-12T17:39:27.521555+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01062",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01062",
        "http_status": 200,
        "sha256": "e92c49f8a115881dccfab4566a2017d18564e9a219e5565b7606fc9dcf9d334c",
        "byte_count": 28755,
        "retrieved_at_utc": "2026-10-12T17:39:27.640455+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01108",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01108",
        "http_status": 200,
        "sha256": "dc398f11083ed435ad5ac903a86cb30b7802087ebb2cb913f99133aa14d0e723",
        "byte_count": 28214,
        "retrieved_at_utc": "2026-10-12T17:39:27.802433+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00655",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00655",
        "http_status": 200,
        "sha256": "85556c1c54ec524a75d4bf18b542a3b9d6adc5fd4f5b10e3dec4bb4755b500ec",
        "byte_count": 38534,
        "retrieved_at_utc": "2026-10-12T17:39:27.845600+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01025",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01025",
        "http_status": 200,
        "sha256": "4aab9f1a8357ed60cb054d512e1a172037693e1a84e2a6f8767ab683567483d1",
        "byte_count": 31129,
        "retrieved_at_utc": "2026-10-12T17:39:29.216502+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00590",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00590",
        "http_status": 200,
        "sha256": "2cf8cc82371dcfdb8a2f8ddda7e3fa5d6efa0093391fe2644a54fdadcfe7f78e",
        "byte_count": 29854,
        "retrieved_at_utc": "2026-10-12T17:39:29.897938+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00644",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00644",
        "http_status": 200,
        "sha256": "43ec435002228153f159105d6f5a04916be7e99ef0cc46a01c9b145d3dd59f6d",
        "byte_count": 29044,
        "retrieved_at_utc": "2026-10-12T17:39:30.115591+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00488",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00488",
        "http_status": 200,
        "sha256": "904651d04495430ef38fe920caaa07c1f6a072c8044cf9b02135a59cd5cbdf9f",
        "byte_count": 30586,
        "retrieved_at_utc": "2026-10-12T17:39:31.180282+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00611",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00611",
        "http_status": 200,
        "sha256": "ce7457e3096bd52b4d8d818bfd191c38dc2562d9a418f2ef2587a40a5a44d748",
        "byte_count": 29611,
        "retrieved_at_utc": "2026-10-12T17:39:31.687265+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01049",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01049",
        "http_status": 200,
        "sha256": "3b6dfa55316a011fe7b47a01bcf4b469ed23c043eccf3edb41ea1b86b09a75b8",
        "byte_count": 28015,
        "retrieved_at_utc": "2026-10-12T17:39:32.055446+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01160",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01160",
        "http_status": 200,
        "sha256": "c622ebc1d7b7d942d65d140e6fe83b3145c3dac538e1dc166b1e9038a31484df",
        "byte_count": 27396,
        "retrieved_at_utc": "2026-10-12T17:39:32.125398+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01161",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01161",
        "http_status": 200,
        "sha256": "e646d4275a0bffbff608da49e4b1797e721f74623835245181a05c71c2a8bf47",
        "byte_count": 27407,
        "retrieved_at_utc": "2026-10-12T17:39:32.939044+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00429",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00429",
        "http_status": 200,
        "sha256": "45a6d0be5b31169c82236178c7f1bc88d7d54657211df5b2515307f9b37f8f28",
        "byte_count": 31106,
        "retrieved_at_utc": "2026-10-12T17:39:33.221267+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01090",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01090",
        "http_status": 200,
        "sha256": "5cfcc6cbd8ba661fe0af723e769daf780879c0b594f2b2e902b6f6818bdb9ed5",
        "byte_count": 30399,
        "retrieved_at_utc": "2026-10-12T17:39:33.288468+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00483",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00483",
        "http_status": 200,
        "sha256": "47f3106f7db7815235a888bda76a2bcecf3dbcc0d6556f0cd376e1893c5a6bc8",
        "byte_count": 29812,
        "retrieved_at_utc": "2026-10-12T17:39:34.108949+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00494",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00494",
        "http_status": 200,
        "sha256": "eea119b1d44f824c82454cb670f852b1bd3ef4e9c8d31f1c16d02da59b2a6c00",
        "byte_count": 34958,
        "retrieved_at_utc": "2026-10-12T17:39:34.903178+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00631",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00631",
        "http_status": 200,
        "sha256": "2c9c5c159c1faee709dd2264f5018cee404f577be0856122dac16247fa0d35b7",
        "byte_count": 29976,
        "retrieved_at_utc": "2026-10-12T17:39:35.112771+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01116",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01116",
        "http_status": 200,
        "sha256": "8f7a6a0c27822cd4f6f240aa2bd1de295671318f62ee8aa90ba98c3c3893208c",
        "byte_count": 28220,
        "retrieved_at_utc": "2026-10-12T17:39:35.239945+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01120",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01120",
        "http_status": 200,
        "sha256": "364c00b6d0eada6c6a487ad450f28c58c1e85cd42310a35f7126531cc02d2d58",
        "byte_count": 28029,
        "retrieved_at_utc": "2026-10-12T17:39:35.276292+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00652",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00652",
        "http_status": 200,
        "sha256": "c3467e5c97aa0fe846fdc2264aaa757f15a326f32a5b5505ffa7e0cfbbfb9cc9",
        "byte_count": 29306,
        "retrieved_at_utc": "2026-10-12T17:39:36.314244+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01115",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01115",
        "http_status": 200,
        "sha256": "a3caee2350949ed0a0e43c8b032124af0469261684924e31be58efaad8666fb7",
        "byte_count": 28247,
        "retrieved_at_utc": "2026-10-12T17:39:36.940799+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00128",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00128",
        "http_status": 200,
        "sha256": "2b3051c36f86639fa5d3ea6550524e03a8ddb70e1d1e6c3846993e47f0d3ac0e",
        "byte_count": 35061,
        "retrieved_at_utc": "2026-10-12T17:39:37.036150+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00396",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00396",
        "http_status": 200,
        "sha256": "474c4926a17a185e2e509e061eb9dbe6e5aae932a2328059119bfdb087a12986",
        "byte_count": 29680,
        "retrieved_at_utc": "2026-10-12T17:39:37.697719+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00598",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00598",
        "http_status": 200,
        "sha256": "e964e33659cce023d6e9f96b83f9f00c5886f7615afb46b237ca052e95531216",
        "byte_count": 31720,
        "retrieved_at_utc": "2026-10-12T17:39:37.923926+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00259",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00259",
        "http_status": 200,
        "sha256": "7d53504104b2075281c64599b04ca55ab87476330f4869ff6e5bc6010ac55ba7",
        "byte_count": 31424,
        "retrieved_at_utc": "2026-10-12T17:39:38.365651+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00932",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00932",
        "http_status": 200,
        "sha256": "c63de7ab3ba6125ffb0081762c78bcecb1d34d0ff5e25e90da4653ef1ee9a221",
        "byte_count": 30664,
        "retrieved_at_utc": "2026-10-12T17:39:39.315152+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00623",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00623",
        "http_status": 200,
        "sha256": "23cf31cd589075f1e88102e3535ce8f22d9569c65cccdec8ec3d29ac87db70dc",
        "byte_count": 28492,
        "retrieved_at_utc": "2026-10-12T17:39:40.454271+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00537",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00537",
        "http_status": 200,
        "sha256": "76cb7b38f7c8bcff5a77d87aacc2e409324097d9cdb270860c6d9edec96a1527",
        "byte_count": 29486,
        "retrieved_at_utc": "2026-10-12T17:39:40.491384+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00653",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00653",
        "http_status": 200,
        "sha256": "bce5fefc626b5132acc3a1d9a270ec7db001e12fe675d8d278003b3cedb30432",
        "byte_count": 29715,
        "retrieved_at_utc": "2026-10-12T17:39:40.606024+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00217",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00217",
        "http_status": 200,
        "sha256": "c42ecba4480d53a1e62444c29361902361a2cefc9c265a49a114adfb4b3117d5",
        "byte_count": 34176,
        "retrieved_at_utc": "2026-10-12T17:39:40.786299+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01101",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01101",
        "http_status": 200,
        "sha256": "950e8e5a01ae19a8486bb41b125979036ae84001d892633693b753f303971099",
        "byte_count": 28026,
        "retrieved_at_utc": "2026-10-12T17:39:40.858380+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00553",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00553",
        "http_status": 200,
        "sha256": "4057e168c7e832de6b44a46f95c0c944660f320d19f3261a1fb02351239ae369",
        "byte_count": 32743,
        "retrieved_at_utc": "2026-10-12T17:39:41.018144+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00529",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00529",
        "http_status": 200,
        "sha256": "0a7f3caecd017b9d612f59a7a41a1d0017582b5a5397644133589eeacdb9b56e",
        "byte_count": 32859,
        "retrieved_at_utc": "2026-10-12T17:39:42.096799+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00604",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00604",
        "http_status": 200,
        "sha256": "eaab7ea4bd9cad29eaecc06c43b0b04e4425d490c3fc71b71f880ad8cc36b515",
        "byte_count": 32990,
        "retrieved_at_utc": "2026-10-12T17:39:42.162905+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00515",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00515",
        "http_status": 200,
        "sha256": "aa10d1ac13c452f750933754f7ca76a898eb0e7ce884564eea74303821a4cad8",
        "byte_count": 30745,
        "retrieved_at_utc": "2026-10-12T17:39:42.529333+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00614",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00614",
        "http_status": 200,
        "sha256": "448e5a90b3667fe62d2c27f8911c40f0847a97a78486c9182c4dc93c013a6f39",
        "byte_count": 98611,
        "retrieved_at_utc": "2026-10-12T17:39:42.935912+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00592",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00592",
        "http_status": 200,
        "sha256": "5ef5bddf69c0ecbc679a1f45a0c0aa73f0723afa39fe4bf93e600e51919ae3fd",
        "byte_count": 29988,
        "retrieved_at_utc": "2026-10-12T17:39:44.075981+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01155",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01155",
        "http_status": 200,
        "sha256": "836bd143de6f929faf62e018f90247feafce775f0816337285037900d5de919a",
        "byte_count": 27418,
        "retrieved_at_utc": "2026-10-12T17:39:44.957808+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01027",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01027",
        "http_status": 200,
        "sha256": "5520a87094835b39b0fd5a7ff948d28abde6e8eb80a6e2a796310a307751647e",
        "byte_count": 31197,
        "retrieved_at_utc": "2026-10-12T17:39:45.628351+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00659",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00659",
        "http_status": 200,
        "sha256": "9714a9339ac5d333b942866ba7a2e2ce0d811983c756653b0cc18643c55c74a4",
        "byte_count": 29306,
        "retrieved_at_utc": "2026-10-12T17:39:45.761954+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00624",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00624",
        "http_status": 200,
        "sha256": "8fb62ff74cb8421b3c579cb671c3cd198b4b2802ff1627cecc16b72b459acb55",
        "byte_count": 30394,
        "retrieved_at_utc": "2026-10-12T17:39:45.856564+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00819",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00819",
        "http_status": 200,
        "sha256": "aef3582e7f28cc3f29b72fb16461a78e08d4550796ad55649f556ea4444599f2",
        "byte_count": 28335,
        "retrieved_at_utc": "2026-10-12T17:39:46.015452+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00634",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00634",
        "http_status": 200,
        "sha256": "409e9223c2d11127a9aee329e508cd8136aa53720b7c8b6d0b35bd4c77a036ee",
        "byte_count": 30341,
        "retrieved_at_utc": "2026-10-12T17:39:46.140368+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00630",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00630",
        "http_status": 200,
        "sha256": "adfbea4b5e8f73ec279d1728075e1b84afdc9bfa2872fa6d50cdb1a35e3c11a1",
        "byte_count": 29812,
        "retrieved_at_utc": "2026-10-12T17:39:46.358019+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00654",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00654",
        "http_status": 200,
        "sha256": "ff9d39880e910dc1047aef4a904ffe0be7579a7ed97a50cb75d0234d673a3388",
        "byte_count": 29466,
        "retrieved_at_utc": "2026-10-12T17:39:48.271260+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00619",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00619",
        "http_status": 200,
        "sha256": "c6b04771f73f3537032f8545645893e3e9ffefd387ce193344e9ca703c3fbec4",
        "byte_count": 29643,
        "retrieved_at_utc": "2026-10-12T17:39:48.461722+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00643",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00643",
        "http_status": 200,
        "sha256": "7ec16e7b1b375e56fd9112e526115f3c30dbb5672edbc571ca751846602f4615",
        "byte_count": 28303,
        "retrieved_at_utc": "2026-10-12T17:39:49.032436+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00454",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00454",
        "http_status": 200,
        "sha256": "a0bc4014aaf7fb807ac72b5700444caef98e9aca8f14f370fb2de3af7327b731",
        "byte_count": 48570,
        "retrieved_at_utc": "2026-10-12T17:39:49.573968+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00612",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00612",
        "http_status": 200,
        "sha256": "bdf055340f1fa1fabb33854db18049ecaaed0905749531a5495f64427931b8ee",
        "byte_count": 29788,
        "retrieved_at_utc": "2026-10-12T17:39:49.773132+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00649",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00649",
        "http_status": 200,
        "sha256": "ad1d1808f24055f53d270f4b3dd7b83f5f0c635f5d42dfcddcb4c168bacb822d",
        "byte_count": 29619,
        "retrieved_at_utc": "2026-10-12T17:39:49.836874+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00555",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00555",
        "http_status": 200,
        "sha256": "eb9ef39b0da2d8a92912f1ddb588e38e825d5a73c703408e55bfb4a2fcf41444",
        "byte_count": 28399,
        "retrieved_at_utc": "2026-10-12T17:39:50.972143+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00428",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00428",
        "http_status": 200,
        "sha256": "b5456167a498ad2dd857074a670328d96d598e10c965c4bdd946f3248151a4d1",
        "byte_count": 29005,
        "retrieved_at_utc": "2026-10-12T17:39:50.997440+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00546",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00546",
        "http_status": 200,
        "sha256": "ad3a0dbf09ee50a7e218f8cca92439280899854b6323596b1b452449b22828b2",
        "byte_count": 30276,
        "retrieved_at_utc": "2026-10-12T17:39:51.063870+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00591",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00591",
        "http_status": 200,
        "sha256": "f738198ba75d54c53d67023ea0f1cc38f3adab73455f88932ad9389f9cce356c",
        "byte_count": 28422,
        "retrieved_at_utc": "2026-10-12T17:39:51.722590+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00130",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00130",
        "http_status": 200,
        "sha256": "d1e8ce8f1866be9aa1c6d8035f42a9e8193324b2da21426cb323093b5b736039",
        "byte_count": 50019,
        "retrieved_at_utc": "2026-10-12T17:39:52.916206+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00495",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00495",
        "http_status": 200,
        "sha256": "572e991c7368100c645f766f956d1cecf64302407b418175a2fcdb8310434cac",
        "byte_count": 28579,
        "retrieved_at_utc": "2026-10-12T17:39:53.563160+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00602",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00602",
        "http_status": 200,
        "sha256": "166ae2d2fbfb456fd371827c8f8e49c5da097504d5ea7d0adf7d1d8da136f8f7",
        "byte_count": 33216,
        "retrieved_at_utc": "2026-10-12T17:39:53.834598+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00593",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00593",
        "http_status": 200,
        "sha256": "8ebd294d581360792ebca1eff28b67f56031becf267da5d661678ab5bb06b98e",
        "byte_count": 28579,
        "retrieved_at_utc": "2026-10-12T17:39:54.097750+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00263",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00263",
        "http_status": 200,
        "sha256": "f7091a413979c2088d4c550efb2d5fb2fe6fdda1c6291fb9079a94a46fe0888e",
        "byte_count": 28877,
        "retrieved_at_utc": "2026-10-12T17:39:54.403536+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01097",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01097",
        "http_status": 200,
        "sha256": "070a56f685630a176a27ae4e33d3e24ba1a2d1bab6a9e11300e6fd92d9f93b09",
        "byte_count": 28193,
        "retrieved_at_utc": "2026-10-12T17:39:55.227511+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01102",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01102",
        "http_status": 200,
        "sha256": "78d0a471e7f04ed68d3e8d6a9980bbbf7dd69c607ee1e92be55248f9e928a1d3",
        "byte_count": 28152,
        "retrieved_at_utc": "2026-10-12T17:39:55.316788+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00336",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00336",
        "http_status": 200,
        "sha256": "6222ff03c5ad5a1887da3967a6ff4d2e5d59f1c628026a87cd27e443d468dbd7",
        "byte_count": 32947,
        "retrieved_at_utc": "2026-10-12T17:39:55.419174+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00170",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00170",
        "http_status": 200,
        "sha256": "8ac541faceb931669282b7d93956996c8c2b5940efd05035875e595b80a4f2db",
        "byte_count": 31758,
        "retrieved_at_utc": "2026-10-12T17:39:55.787574+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00576",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00576",
        "http_status": 200,
        "sha256": "7d230abb3b3cc3efed9f4289d34652f0a5e8db51df5f674d376568846d3acaab",
        "byte_count": 36749,
        "retrieved_at_utc": "2026-10-12T17:39:56.025431+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00544",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00544",
        "http_status": 200,
        "sha256": "780bf2f6de9ae12088923b0cd483bc6613b9d563f2ab739235af1438084a64fa",
        "byte_count": 28448,
        "retrieved_at_utc": "2026-10-12T17:39:56.999047+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00621",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00621",
        "http_status": 200,
        "sha256": "4f3c225081c6dde412549dfe6f1a656824f237e6b0c65d4f8efe0d3ac136009c",
        "byte_count": 28661,
        "retrieved_at_utc": "2026-10-12T17:39:57.265205+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00420",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00420",
        "http_status": 200,
        "sha256": "9ba85f417388ed0e21e2328b7663e423be18d2ce3b43bdcf2cc1310aca073ccd",
        "byte_count": 34214,
        "retrieved_at_utc": "2026-10-12T17:39:57.572564+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00260",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00260",
        "http_status": 200,
        "sha256": "83c740f776c5b8710b00c6b5eac1702adff436f7b7481d4ba199cd7faa9f944e",
        "byte_count": 30732,
        "retrieved_at_utc": "2026-10-12T17:39:58.318482+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01093",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01093",
        "http_status": 200,
        "sha256": "c66a136fc08186574cf9b0562bccf429b473649d898a8d1008127e58bf05cabc",
        "byte_count": 28256,
        "retrieved_at_utc": "2026-10-12T17:39:59.227512+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01037",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01037",
        "http_status": 200,
        "sha256": "ccd1f436bf3b7fcf1bee30a08a4637bc7af5e0c8aa6542d2e034899a5595d2e7",
        "byte_count": 29831,
        "retrieved_at_utc": "2026-10-12T17:39:59.934565+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00566",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00566",
        "http_status": 200,
        "sha256": "01a1f744a54fc379cfd32558ab55c43476bdef0842d9fe294e94ec5165c18e4d",
        "byte_count": 29356,
        "retrieved_at_utc": "2026-10-12T17:39:59.951904+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00645",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00645",
        "http_status": 200,
        "sha256": "02536e5d71c64f7c4ae35ca1782b8fe09b2007d0c4d094bbf643e6afdbfd97d0",
        "byte_count": 29537,
        "retrieved_at_utc": "2026-10-12T17:40:00.752766+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00511",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00511",
        "http_status": 200,
        "sha256": "45532abd115e2d6b63155939564fc1a22c48c9ec51f985716d2628086bb52cb0",
        "byte_count": 49705,
        "retrieved_at_utc": "2026-10-12T17:40:00.819715+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00169",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00169",
        "http_status": 200,
        "sha256": "068e0c10a98dc3862b620ccfad1c106dfd4764556941b9f8d9aa13529d58972d",
        "byte_count": 68322,
        "retrieved_at_utc": "2026-10-12T17:40:01.183184+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00647",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00647",
        "http_status": 200,
        "sha256": "a1f2eb805835785d9cb2ccb600409a8715f86b072fe8d94afa11abdec4bd0c75",
        "byte_count": 29491,
        "retrieved_at_utc": "2026-10-12T17:40:01.648092+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00600",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00600",
        "http_status": 200,
        "sha256": "00f0bb62f5d529848f125a133c936d31940d0bc7aa783b8c51b9283402283bd0",
        "byte_count": 29318,
        "retrieved_at_utc": "2026-10-12T17:40:02.037968+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00450",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00450",
        "http_status": 200,
        "sha256": "eda6efebcfdcdafe50c859dd36d476eacc2b841c7913c778a2b3de361f7a6efc",
        "byte_count": 32060,
        "retrieved_at_utc": "2026-10-12T17:40:02.204830+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00265",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00265",
        "http_status": 200,
        "sha256": "472565e1edac46608044bdc13e4bb58c002565dde1ccb8aa6e91d4838ec17f3f",
        "byte_count": 32099,
        "retrieved_at_utc": "2026-10-12T17:40:03.506232+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01085",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01085",
        "http_status": 200,
        "sha256": "c0cc06c6728367256797d71b7bc9637b46d1d3155d6852994e04a982e5c84f7c",
        "byte_count": 28320,
        "retrieved_at_utc": "2026-10-12T17:40:03.555066+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00434",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00434",
        "http_status": 200,
        "sha256": "1cc5aaec81944929513013c295f1d8a2dd1eb76c0c92b01d7841fac8ecfc8393",
        "byte_count": 29304,
        "retrieved_at_utc": "2026-10-12T17:40:04.195005+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00222",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00222",
        "http_status": 200,
        "sha256": "05a23d3d3a11f805dd4a72f2c418385a9feed4c1bc2a976f9eabc3c21389336a",
        "byte_count": 32089,
        "retrieved_at_utc": "2026-10-12T17:40:05.603066+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00564",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00564",
        "http_status": 200,
        "sha256": "e4fd8c48fc40ab114bc74b30088b6851d5125d8740a1ebc6cedcf10302997768",
        "byte_count": 31349,
        "retrieved_at_utc": "2026-10-12T17:40:05.625205+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00573",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00573",
        "http_status": 200,
        "sha256": "11f7a4b71c7d04768885673289b68d49f8129d29d665dedefedfc02fd90d6309",
        "byte_count": 29894,
        "retrieved_at_utc": "2026-10-12T17:40:06.061054+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00527",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00527",
        "http_status": 200,
        "sha256": "2a322532ae6c7b356bb8fea88ef33063885497a44a7c2f9eb931a96be4cb494c",
        "byte_count": 32861,
        "retrieved_at_utc": "2026-10-12T17:40:06.090645+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00171",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00171",
        "http_status": 200,
        "sha256": "82ddf8e2c67453df7471f479b2a2be14cd4fab6a66ea2859f340415d56d6eed7",
        "byte_count": 36313,
        "retrieved_at_utc": "2026-10-12T17:40:06.127734+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00489",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00489",
        "http_status": 200,
        "sha256": "1bec41673a176c5b80591fa1849c2cd85915fa935c079094992a1bfe4bebc199",
        "byte_count": 28711,
        "retrieved_at_utc": "2026-10-12T17:40:06.260095+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00609",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00609",
        "http_status": 200,
        "sha256": "7bf67856ca6d3a43c3673321041605c2367a980f0abdad96c3ab668825b21dcf",
        "byte_count": 30334,
        "retrieved_at_utc": "2026-10-12T17:40:07.339591+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00561",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00561",
        "http_status": 200,
        "sha256": "afd41d367685712e0b64cde45ea3521e472e80505aa8b5d3b777dc8a0b8f24f6",
        "byte_count": 28426,
        "retrieved_at_utc": "2026-10-12T17:40:07.758745+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00247",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00247",
        "http_status": 200,
        "sha256": "e50d9c8a0707c94263a06e5e6a529c6af7e520d0e0c542f8adb01e6f6c3f7cc2",
        "byte_count": 47987,
        "retrieved_at_utc": "2026-10-12T17:40:07.786934+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00486",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00486",
        "http_status": 200,
        "sha256": "05fc7ca84ded3c96d524fde703e9f7a2c5f044568dfc16e5af2a688d0f365ac0",
        "byte_count": 33271,
        "retrieved_at_utc": "2026-10-12T17:40:07.918043+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01095",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01095",
        "http_status": 200,
        "sha256": "69f4f07daa8a926086c78f5b00636b34cc786e80bb229c59f6ddfa2cf0370e11",
        "byte_count": 28305,
        "retrieved_at_utc": "2026-10-12T17:40:09.498058+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00238",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00238",
        "http_status": 200,
        "sha256": "af16cdc35f60251afd42260cdb7bb8917d06d115772f7fd9d8f39f5fb439ed40",
        "byte_count": 29970,
        "retrieved_at_utc": "2026-10-12T17:40:09.723622+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00211",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00211",
        "http_status": 200,
        "sha256": "8874a68cf7af4eb7fcfdaf2a327e2f5d7007e84a571a0910def1206373270c20",
        "byte_count": 32099,
        "retrieved_at_utc": "2026-10-12T17:40:10.236895+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01119",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01119",
        "http_status": 200,
        "sha256": "c0fb09ac3684e1d381786891bcdeea3cfa2b6dabfbd768c38e8afb359f2e89f7",
        "byte_count": 28191,
        "retrieved_at_utc": "2026-10-12T17:40:10.269171+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00315",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00315",
        "http_status": 200,
        "sha256": "f671a11971b88b4de5efa097b0f1f982b7ae40ebe3309e8f1489fd4467da5663",
        "byte_count": 88330,
        "retrieved_at_utc": "2026-10-12T17:40:11.119786+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01104",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01104",
        "http_status": 200,
        "sha256": "f0346171eb14e9ea3574043990418a3b173de09d6e523b96de90f650a64607ed",
        "byte_count": 29310,
        "retrieved_at_utc": "2026-10-12T17:40:11.658532+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00472",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00472",
        "http_status": 200,
        "sha256": "87cd7aebbab1f48478de44c1cb5a5ec3c25037f08b823482cbfc2eba7f643c1e",
        "byte_count": 30559,
        "retrieved_at_utc": "2026-10-12T17:40:11.678335+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00568",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00568",
        "http_status": 200,
        "sha256": "c15409b7512eb1378102060dcdb7f85ff35d5f2808e1dd87400efb66c6c54e4a",
        "byte_count": 28804,
        "retrieved_at_utc": "2026-10-12T17:40:11.781533+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00656",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00656",
        "http_status": 200,
        "sha256": "de0a2ae9d249dc04678257a84232e9948998f6c354a722a99e2ffeb8e5749562",
        "byte_count": 74803,
        "retrieved_at_utc": "2026-10-12T17:40:12.133010+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00266",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00266",
        "http_status": 200,
        "sha256": "4339fc630cdf72672ef88d7f76fad20e8b163528287e1a60771304fe97228a5a",
        "byte_count": 29910,
        "retrieved_at_utc": "2026-10-12T17:40:12.351525+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01100",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01100",
        "http_status": 200,
        "sha256": "c6eb5d56f427226a0dbd55dcfbb76838d41b8a2ac27699895538c07bcc823b3c",
        "byte_count": 28199,
        "retrieved_at_utc": "2026-10-12T17:40:13.011718+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00572",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00572",
        "http_status": 200,
        "sha256": "c3c7e8661220c81afb6a72bd077200452fb821e4b2abb83b3d0c918709c350f5",
        "byte_count": 31265,
        "retrieved_at_utc": "2026-10-12T17:40:13.453489+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00166",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00166",
        "http_status": 200,
        "sha256": "16b930d115d5b3c721580a813b31f1af461f57ba3c693691c54e3edd58c8e5d8",
        "byte_count": 53647,
        "retrieved_at_utc": "2026-10-12T17:40:14.844102+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00167",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00167",
        "http_status": 200,
        "sha256": "5fd75ff6fc0d1a83886d936a432a9258da032fa9a145ac9c015695c6901ee441",
        "byte_count": 30058,
        "retrieved_at_utc": "2026-10-12T17:40:15.323545+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00253",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00253",
        "http_status": 200,
        "sha256": "f09500eab807256b7a931e9659df696fa02bdfa912a4653892027e7bd904ab2a",
        "byte_count": 44898,
        "retrieved_at_utc": "2026-10-12T17:40:15.486408+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00152",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00152",
        "http_status": 200,
        "sha256": "db02f2043bf2cb40bbbdfce9e2e0c69ef008dae72a9e5b97f72ff5680421fad9",
        "byte_count": 39128,
        "retrieved_at_utc": "2026-10-12T17:40:16.171399+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00435",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00435",
        "http_status": 200,
        "sha256": "49c5b2c0e73c559942e08ae51f634ebaee3df7b99c11272b3649fba883fa066b",
        "byte_count": 32758,
        "retrieved_at_utc": "2026-10-12T17:40:16.298329+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01103",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01103",
        "http_status": 200,
        "sha256": "2364f4ce8181d18fd0c1a5519e288bd0b36b8aab59c0b023ecc369e7a38b9f84",
        "byte_count": 28190,
        "retrieved_at_utc": "2026-10-12T17:40:17.149330+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00248",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00248",
        "http_status": 200,
        "sha256": "dc38c6b22ab2e395c60485f2bf59ff6ee1ae0376b3683be3ee0f82740629d3d9",
        "byte_count": 35563,
        "retrieved_at_utc": "2026-10-12T17:40:17.339858+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00605",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00605",
        "http_status": 200,
        "sha256": "af423ee2fb132af47e5d6aa9dbcb6ba0aa5b809cc8c6a6f20d5d624e3cfdd105",
        "byte_count": 28726,
        "retrieved_at_utc": "2026-10-12T17:40:17.361648+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01064",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01064",
        "http_status": 200,
        "sha256": "a94ae792dd1cdc4d38e6f9933d9ba6a1c1ccdcc6e8b31da318b6c211b08130a4",
        "byte_count": 28235,
        "retrieved_at_utc": "2026-10-12T17:40:17.484925+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00617",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00617",
        "http_status": 200,
        "sha256": "316fc14fce57de7d27604da7650edec1fa84f5d1125c434fab2b1e6d0677393a",
        "byte_count": 29431,
        "retrieved_at_utc": "2026-10-12T17:40:19.189874+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01050",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01050",
        "http_status": 200,
        "sha256": "40b6e8c958c52cc0ec89301814b096dad502aa4a833bdb4da9af0811e0d61bd3",
        "byte_count": 28200,
        "retrieved_at_utc": "2026-10-12T17:40:20.196226+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00963",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00963",
        "http_status": 200,
        "sha256": "93ae3066cadec04aeaa8ebb29ed302c533febb19716811d5c857e05195693991",
        "byte_count": 28878,
        "retrieved_at_utc": "2026-10-12T17:40:20.712525+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00220",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00220",
        "http_status": 200,
        "sha256": "fbb95aa540eb8b88b9b63194f80008fdce011af25347d810dbd5e9c2d2cc4829",
        "byte_count": 60793,
        "retrieved_at_utc": "2026-10-12T17:40:21.361156+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01051",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01051",
        "http_status": 200,
        "sha256": "f99257e62f55f2a256969a93965f88431a58ce5d0edd3bd5cafd01e99ead2138",
        "byte_count": 27972,
        "retrieved_at_utc": "2026-10-12T17:40:21.504276+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00323",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00323",
        "http_status": 200,
        "sha256": "1c275962284ab8cc0b57da0d2a6e2adbfb0713227ff69e0b19476632cfa887e8",
        "byte_count": 34094,
        "retrieved_at_utc": "2026-10-12T17:40:22.090126+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00528",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00528",
        "http_status": 200,
        "sha256": "c9aaa44980b72fc2d2d53e01aeb54b15f0563ec377b9bd1f08fa5ccb39d0bd3c",
        "byte_count": 30047,
        "retrieved_at_utc": "2026-10-12T17:40:22.168792+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00213",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00213",
        "http_status": 200,
        "sha256": "61eb143d4660739abdbd852d338b2e87b85a395051f6d144f957c2c3cf65f2f6",
        "byte_count": 45648,
        "retrieved_at_utc": "2026-10-12T17:40:22.460613+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00380",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00380",
        "http_status": 200,
        "sha256": "d7de74d08d18e2cbedff60d269db0172d2e332304507026268b25803a810ddec",
        "byte_count": 44438,
        "retrieved_at_utc": "2026-10-12T17:40:22.766893+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01159",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01159",
        "http_status": 200,
        "sha256": "a24a619952217576c8bd1629fb2f0113e141b0c3f77dec0304de41a40055b875",
        "byte_count": 27389,
        "retrieved_at_utc": "2026-10-12T17:40:22.928480+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00632",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00632",
        "http_status": 200,
        "sha256": "1f7ea1ca3434d06cc7c1fe2cb0e42236ae867b4b49f9e2a8f12fc24ef4654945",
        "byte_count": 29203,
        "retrieved_at_utc": "2026-10-12T17:40:25.862286+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01092",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01092",
        "http_status": 200,
        "sha256": "9e576d85554800567bfe5fd52dc058214e8b028798fcbd3df92a267761abb986",
        "byte_count": 28172,
        "retrieved_at_utc": "2026-10-12T17:40:26.482789+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00549",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00549",
        "http_status": 200,
        "sha256": "9887b925a81d0205f45bf53967fce5710d6e99253cc577990d25aafb361f9b33",
        "byte_count": 33272,
        "retrieved_at_utc": "2026-10-12T17:40:26.523936+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01048",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01048",
        "http_status": 200,
        "sha256": "6a41e9a06ed11ee9604dd55b0cb575d28b0bdf0e38cf77bf691413420d267fc8",
        "byte_count": 35555,
        "retrieved_at_utc": "2026-10-12T17:40:26.923383+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00618",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00618",
        "http_status": 200,
        "sha256": "0ceb175c329f79e9e6de8dd5fb88e4d3a07263acdbc979057dc39908fdba8613",
        "byte_count": 30254,
        "retrieved_at_utc": "2026-10-12T17:40:27.857406+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00595",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00595",
        "http_status": 200,
        "sha256": "a64dd7eedef45fa5076ed82a8cc4ebb35ea11d0d6622b03f28e4e78b858ba6e8",
        "byte_count": 30147,
        "retrieved_at_utc": "2026-10-12T17:40:29.936425+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00551",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00551",
        "http_status": 200,
        "sha256": "0b70d594a908bf04a9f70ca9cefa19529bb2b6cb5720961b88e9757cd9ade5cc",
        "byte_count": 28553,
        "retrieved_at_utc": "2026-10-12T17:40:30.668211+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00258",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00258",
        "http_status": 200,
        "sha256": "5bd37ebe55bc7d305b1061d63cd1d092d810b0966de5136a8bf548d1f1b3f519",
        "byte_count": 31396,
        "retrieved_at_utc": "2026-10-12T17:40:31.098275+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01052",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01052",
        "http_status": 200,
        "sha256": "5445e9f1299ca7242a6f23fadcc13280f07e99cd9397b792c81cdcd548edd58b",
        "byte_count": 28166,
        "retrieved_at_utc": "2026-10-12T17:40:31.133918+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01088",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01088",
        "http_status": 200,
        "sha256": "bc2a61c7d1df671ed91b0163eef6a006224568ff016ea0ad941faa54852accca",
        "byte_count": 28165,
        "retrieved_at_utc": "2026-10-12T17:40:31.577421+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00629",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00629",
        "http_status": 200,
        "sha256": "552f2a6a12d3a1437c6e2b48c722da9529124280aaa615a6fb6bc98e18017bb7",
        "byte_count": 29617,
        "retrieved_at_utc": "2026-10-12T17:40:32.036149+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00360",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00360",
        "http_status": 200,
        "sha256": "d3979ccb90ccb3a714f69d33c07793b8f5dfc3a881fc1c98e1a72f239ffd6e97",
        "byte_count": 36431,
        "retrieved_at_utc": "2026-10-12T17:40:32.153029+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00518",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00518",
        "http_status": 200,
        "sha256": "fc42d56dccc8c1142a3a9ef600e0f11830edf488e60a0a97bf9e3eb8db0be74a",
        "byte_count": 31514,
        "retrieved_at_utc": "2026-10-12T17:40:32.191919+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00501",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00501",
        "http_status": 200,
        "sha256": "582ca97270b0e9e2e8a80df7228dead931ae7d6aedaa622a2119dcc9d7ac1769",
        "byte_count": 40308,
        "retrieved_at_utc": "2026-10-12T17:40:32.958327+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00651",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00651",
        "http_status": 200,
        "sha256": "f5e6ef96225c7bcdbef68e253d1c02c8816957064e51c67a4575cd6e6c434f58",
        "byte_count": 29925,
        "retrieved_at_utc": "2026-10-12T17:40:34.861015+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00421",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00421",
        "http_status": 200,
        "sha256": "9cd62b1beb760f8d07c6522917f1f22b642868936ff93573327c1c8203fb0b95",
        "byte_count": 36167,
        "retrieved_at_utc": "2026-10-12T17:40:34.880937+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01174",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01174",
        "http_status": 200,
        "sha256": "8c8a68d17860dba23c65fa0b975f68380e323203f634d39490de1f7672b93260",
        "byte_count": 27406,
        "retrieved_at_utc": "2026-10-12T17:40:35.762505+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00620",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00620",
        "http_status": 200,
        "sha256": "6fe478308a73e63113adb635fa2744886c83b996954dea26b8e133b386ef4bc4",
        "byte_count": 29666,
        "retrieved_at_utc": "2026-10-12T17:40:35.821198+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00408",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00408",
        "http_status": 200,
        "sha256": "20919df05078485daf513f494d6b64ad24c6f44c4466375dcb3708d262ddf468",
        "byte_count": 35064,
        "retrieved_at_utc": "2026-10-12T17:40:35.931864+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00462",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00462",
        "http_status": 200,
        "sha256": "f10a1182c45fd9edff1a4cca47921208c90a1ee8c72db1beeeb64e531127316b",
        "byte_count": 30627,
        "retrieved_at_utc": "2026-10-12T17:40:36.009362+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00251",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00251",
        "http_status": 200,
        "sha256": "587b127fa07b77cc81489183022b50aa677fb77cb5de269309fcf6d273a62855",
        "byte_count": 30553,
        "retrieved_at_utc": "2026-10-12T17:40:37.663363+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01154",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01154",
        "http_status": 200,
        "sha256": "261c76d186c3dd73359abeb5fe7bd960dd736b670b2e3ae1d6c7449d09e8d1fc",
        "byte_count": 28177,
        "retrieved_at_utc": "2026-10-12T17:40:37.684186+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01053",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01053",
        "http_status": 200,
        "sha256": "1aef1d3af6751a69ca245c2443e24b3a092f3f82d5aca12475d4669d73ea3325",
        "byte_count": 28012,
        "retrieved_at_utc": "2026-10-12T17:40:38.210301+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01054",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01054",
        "http_status": 200,
        "sha256": "c9b2933d16e538079ed009433e43ae86c332c9e94908c2326e1a04ae78d7b9dc",
        "byte_count": 28162,
        "retrieved_at_utc": "2026-10-12T17:40:38.529715+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00569",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00569",
        "http_status": 200,
        "sha256": "95875c4a801e7c77ec1cb3d044975d280ee08dbbe877c1dfeb932ba156403fa7",
        "byte_count": 29733,
        "retrieved_at_utc": "2026-10-12T17:40:40.156858+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00381",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00381",
        "http_status": 200,
        "sha256": "fa64f8a03eb1d7210b359c2e05c608cd9469fbda7c8c739b9e59c20b380c78c9",
        "byte_count": 45007,
        "retrieved_at_utc": "2026-10-12T17:40:40.274524+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00622",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00622",
        "http_status": 200,
        "sha256": "0d09bec6a567acc53da96ccbdca725dbe635402744fd965aff9b82933467bdf2",
        "byte_count": 30372,
        "retrieved_at_utc": "2026-10-12T17:40:40.752059+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00339",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00339",
        "http_status": 200,
        "sha256": "e283067efe60d97dc4e2f17e7aacb518b5e817fd158b58ebd82c3fe636a3b41e",
        "byte_count": 35591,
        "retrieved_at_utc": "2026-10-12T17:40:41.317568+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01055",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01055",
        "http_status": 200,
        "sha256": "e1e51dc673a05994d321b39e8036249e4d36b2a87e83bdf968d1f0f9593f1a22",
        "byte_count": 30395,
        "retrieved_at_utc": "2026-10-12T17:40:41.541583+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00575",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00575",
        "http_status": 200,
        "sha256": "3f73a029f4d4b2a77643a754bc56f8a796ebb7b429716fd1ce4c9cf04a3fb02f",
        "byte_count": 34753,
        "retrieved_at_utc": "2026-10-12T17:40:41.733315+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01091",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01091",
        "http_status": 200,
        "sha256": "62b1ba5f6bc1045121fd14218fb14bb673b5c3d4f5b6dba014bc331c27fb7eee",
        "byte_count": 28159,
        "retrieved_at_utc": "2026-10-12T17:40:41.758783+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00579",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00579",
        "http_status": 200,
        "sha256": "9bd3069cd3e69ad813cc05e6c1ec980d7e9614633bea58051fa18123faa0e8ac",
        "byte_count": 29809,
        "retrieved_at_utc": "2026-10-12T17:40:42.054652+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00181",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00181",
        "http_status": 200,
        "sha256": "e13299d91d05d16b5f6f0ebf5346a2eb7f48818e5880709a1ba8f40e7253f152",
        "byte_count": 37301,
        "retrieved_at_utc": "2026-10-12T17:40:42.481111+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00012",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00012",
        "http_status": 200,
        "sha256": "1bd5a14cf5f16a7a6aba69c16f90de1187a40549dabbcd498213099db74e3e9a",
        "byte_count": 31501,
        "retrieved_at_utc": "2026-10-12T17:40:43.380839+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00613",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00613",
        "http_status": 200,
        "sha256": "c2ee966c9f76a8e161afc52f35e97ac942ea4bf89f7937a2e9956142ef60ec40",
        "byte_count": 30181,
        "retrieved_at_utc": "2026-10-12T17:40:43.484956+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01096",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01096",
        "http_status": 200,
        "sha256": "21409ecd9bf7b5a233909c0e3bd5ace498adb05a3cbab273cf6fc245c3dd3470",
        "byte_count": 28275,
        "retrieved_at_utc": "2026-10-12T17:40:43.966656+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00235",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00235",
        "http_status": 200,
        "sha256": "1600b2d2c04750b2cfbb2fc8fdb2811eac3f994d6f1a3be0a7c4a19dc0ffedc4",
        "byte_count": 40832,
        "retrieved_at_utc": "2026-10-12T17:40:44.592516+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00409",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00409",
        "http_status": 200,
        "sha256": "2ed3c90ffafa51dab7de5812384ebb93bc32a9e0eb0735328da6d91b84045064",
        "byte_count": 32039,
        "retrieved_at_utc": "2026-10-12T17:40:45.297568+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00558",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00558",
        "http_status": 200,
        "sha256": "a8a408fb34cb1e6a48f48e5e9c6e42827bb1d39defbfc70e2cb80d897db02aa1",
        "byte_count": 28945,
        "retrieved_at_utc": "2026-10-12T17:40:45.533380+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00445",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00445",
        "http_status": 200,
        "sha256": "150c0a0afb327ce82f487342070b3ab3bc37abe2b8f77f3e1ebabbf57c922402",
        "byte_count": 31924,
        "retrieved_at_utc": "2026-10-12T17:40:45.618022+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00525",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00525",
        "http_status": 200,
        "sha256": "5b87a58b66a74f7a1f7d244579ecf2fd344c7425496c77f4fb7859175512b31e",
        "byte_count": 31370,
        "retrieved_at_utc": "2026-10-12T17:40:45.671910+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00627",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00627",
        "http_status": 200,
        "sha256": "dddfd13e628456375c0eb9a7a20982645a64d4120245aec012cd0ea6219dcffc",
        "byte_count": 30115,
        "retrieved_at_utc": "2026-10-12T17:40:45.787435+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00535",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00535",
        "http_status": 200,
        "sha256": "62346e4becf22cd6a2405979a19a286e6c72d314810582b3105ba15ece4b2d23",
        "byte_count": 32087,
        "retrieved_at_utc": "2026-10-12T17:40:46.885157+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00599",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00599",
        "http_status": 200,
        "sha256": "ef4386382a831ce45016f3938579685e863a53c233c4b9c2a7d4be862f58ac81",
        "byte_count": 30978,
        "retrieved_at_utc": "2026-10-12T17:40:46.982636+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01156",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01156",
        "http_status": 200,
        "sha256": "15a29512b94124ce476ac2eb08eebc517d6dca7ede762e1fceef22b614672c6a",
        "byte_count": 27203,
        "retrieved_at_utc": "2026-10-12T17:40:47.554283+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00610",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00610",
        "http_status": 200,
        "sha256": "d0c9685a18f349261430e856c26b5e2d66424f3fb46497cbcbe443eed4f6b3e3",
        "byte_count": 30366,
        "retrieved_at_utc": "2026-10-12T17:40:48.155273+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00337",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00337",
        "http_status": 200,
        "sha256": "dbab22f0d1eb5385f679028317f2c5d2ffcc0ec07eb24b4eab61887db5a36153",
        "byte_count": 33681,
        "retrieved_at_utc": "2026-10-12T17:40:48.692356+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00484",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00484",
        "http_status": 200,
        "sha256": "b7d49d7eb61ef0730dde6e4e0f93ae9b103c0b59974332baeb9386102634ef75",
        "byte_count": 30071,
        "retrieved_at_utc": "2026-10-12T17:40:49.064496+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00162",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00162",
        "http_status": 200,
        "sha256": "f0ba746f9e50add625eb3789dfba8c6bc9498d3e2ddb42a3e096fb79e42d46bd",
        "byte_count": 45271,
        "retrieved_at_utc": "2026-10-12T17:40:49.400257+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00601",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00601",
        "http_status": 200,
        "sha256": "60476b201a7622ae471a5de346058e2685edad2bbfd19d3fdea8433a3a46d194",
        "byte_count": 30025,
        "retrieved_at_utc": "2026-10-12T17:40:50.009449+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00497",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00497",
        "http_status": 200,
        "sha256": "6f1cad9257457f257b567e7989a22aab5dd44657c3e32f6a0621bdff27f5cd69",
        "byte_count": 30000,
        "retrieved_at_utc": "2026-10-12T17:40:50.206885+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00548",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00548",
        "http_status": 200,
        "sha256": "5cc5a20f3c6326bf21c196df52d2579eafbb899a5a6177e40b275cac7ca9d382",
        "byte_count": 30168,
        "retrieved_at_utc": "2026-10-12T17:40:50.607033+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01099",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01099",
        "http_status": 200,
        "sha256": "e24038c8d1fe44e4bc367463e89e66de8a3610b6c7a708165283d7d3e75f0ce5",
        "byte_count": 28021,
        "retrieved_at_utc": "2026-10-12T17:40:50.681573+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01038",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01038",
        "http_status": 200,
        "sha256": "385bfe0c34ac11bb11a9f8ef0915ac58c1900abbf8113ec5e0276e39c0904b0c",
        "byte_count": 28962,
        "retrieved_at_utc": "2026-10-12T17:40:52.041590+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00650",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00650",
        "http_status": 200,
        "sha256": "be46c271bc7c407411a2ee3cb5cff95bd08fcf75cec1ad486272ff53c04eed88",
        "byte_count": 29281,
        "retrieved_at_utc": "2026-10-12T17:40:52.192384+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00272",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00272",
        "http_status": 200,
        "sha256": "509d207d8b8416b5f570c49caf3da7e31ab0480e8b2b318a396f2bd8504d4659",
        "byte_count": 29980,
        "retrieved_at_utc": "2026-10-12T17:40:52.755356+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00648",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00648",
        "http_status": 200,
        "sha256": "e5bff1c19ee44d9e4b8a4a157e748ad7d458a0a17ab531a9226dd8f7cd709c2f",
        "byte_count": 29289,
        "retrieved_at_utc": "2026-10-12T17:40:52.907283+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01107",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01107",
        "http_status": 200,
        "sha256": "7023d75609685568d3daf28c3d4b69679968ca97a8859347b84062dd34b280e1",
        "byte_count": 28190,
        "retrieved_at_utc": "2026-10-12T17:40:53.447114+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01117",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01117",
        "http_status": 200,
        "sha256": "4e5626da2e9f28235718ce18c174f88817e0f192c194346b46cc697c4b503e1c",
        "byte_count": 28207,
        "retrieved_at_utc": "2026-10-12T17:40:53.533290+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01026",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01026",
        "http_status": 200,
        "sha256": "09967f805332e62d2317aa6c8326ce351eaed19b1e002705ac93b6314915badf",
        "byte_count": 29331,
        "retrieved_at_utc": "2026-10-12T17:40:54.299279+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00565",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00565",
        "http_status": 200,
        "sha256": "963cef3b63b130c974527f9b21bc1a808ee61eba9fc4eefb27f14b00db04489a",
        "byte_count": 28572,
        "retrieved_at_utc": "2026-10-12T17:40:55.302806+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00658",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00658",
        "http_status": 200,
        "sha256": "4defd6dbc5335ed2691c81a5972adb35de725e32ae10105b53d40e999e4ab1c4",
        "byte_count": 28356,
        "retrieved_at_utc": "2026-10-12T17:40:55.343481+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01175",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01175",
        "http_status": 200,
        "sha256": "6cde01f272adfa573bef148da0a0b6c43f7e9bed2ff6ed3c7bcf41ac5728379d",
        "byte_count": 27925,
        "retrieved_at_utc": "2026-10-12T17:40:55.362659+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00482",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00482",
        "http_status": 200,
        "sha256": "849842d9982198015a7a4b6d3ad96dc201b62c4cd26bf7d3d79e649331b8bfac",
        "byte_count": 31591,
        "retrieved_at_utc": "2026-10-12T17:40:56.604366+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00603",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00603",
        "http_status": 200,
        "sha256": "1b5fa5ededfd852b75d3c043e0238f35491c4410870375862e8067ff246ec01a",
        "byte_count": 29721,
        "retrieved_at_utc": "2026-10-12T17:40:56.649990+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00362",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00362",
        "http_status": 200,
        "sha256": "82838b27c7c11abf80e854daacf2fb89468589a6e89484e2d3fa57b9e026b081",
        "byte_count": 31882,
        "retrieved_at_utc": "2026-10-12T17:40:57.562998+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01162",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01162",
        "http_status": 200,
        "sha256": "c2eb64e08b615c89a8428c80e4a29099cf1e68a8f0ee9d08c23d30e325234829",
        "byte_count": 27415,
        "retrieved_at_utc": "2026-10-12T17:40:57.702204+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01176",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01176",
        "http_status": 200,
        "sha256": "406dae223be54d462c919e4948b4f129c50cb70cac0f1710e9b9843522a4b083",
        "byte_count": 27376,
        "retrieved_at_utc": "2026-10-12T17:40:57.858844+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00433",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00433",
        "http_status": 200,
        "sha256": "deb14a58db8eabb8b8b694d92efc394bef11329b41b7b77078eef3fbe8f35291",
        "byte_count": 49593,
        "retrieved_at_utc": "2026-10-12T17:40:57.899263+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00628",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00628",
        "http_status": 200,
        "sha256": "9c04de68f310ac7aa17b1bcdd0e58caab91035a37964c77118595dc5be6f0254",
        "byte_count": 29141,
        "retrieved_at_utc": "2026-10-12T17:40:58.722619+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00406",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00406",
        "http_status": 200,
        "sha256": "e9f81b23c442c4f0131f4821fe9996c619ea887b96bbe76187ae0ac7e777ba88",
        "byte_count": 30710,
        "retrieved_at_utc": "2026-10-12T17:40:59.272457+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01098",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01098",
        "http_status": 200,
        "sha256": "84c36802a075e551ea91d5711c0b13b439581ed39a14d5ea79f3160b38ea2813",
        "byte_count": 28313,
        "retrieved_at_utc": "2026-10-12T17:41:00.534754+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00523",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00523",
        "http_status": 200,
        "sha256": "9d3eebdf9594998bf154f133aae9925bde6952d77d22c4cbd17b21283c974487",
        "byte_count": 30843,
        "retrieved_at_utc": "2026-10-12T17:41:00.911335+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA01061",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA01061",
        "http_status": 200,
        "sha256": "73d96fce4938a5c98a75de49faa51b06de845ea633845eb8af618f3cc49865ea",
        "byte_count": 28771,
        "retrieved_at_utc": "2026-10-12T17:41:00.932575+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00440",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00440",
        "http_status": 200,
        "sha256": "81472a68d6c2731a9eb4d7d6dff0f5e8517d861d989f1cd92122735aab81ec96",
        "byte_count": 29452,
        "retrieved_at_utc": "2026-10-12T17:41:01.052588+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00168",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00168",
        "http_status": 200,
        "sha256": "701fd96080f5d341e23ca328a33402c6a710ba6f7b74872fd6a252b98860edbc",
        "byte_count": 50925,
        "retrieved_at_utc": "2026-10-12T17:41:01.891245+00:00"
      },
      {
        "stage": "station_detail",
        "uka_id": "UKA00524",
        "url": "https://uk-air.defra.gov.uk/networks/site-info?uka_id=UKA00524",
        "http_status": 200,
        "sha256": "2fe9678b18eebebd520e0178a970cf29556e2283bfdd415b4989116c5f98be23",
        "byte_count": 31523,
        "retrieved_at_utc": "2026-10-12T17:41:02.558028+00:00"
      }
    ]
  },
  "acquisition_errors": [],
  "data_provenance": [
    {
      "stage": "annual_site_data",
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NOSC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "01ca1f543c38edf6ccc6d4a94a163a7b56d934320e60ddbe766c5cdded812803",
      "byte_count": 293513,
      "retrieved_at_utc": "2026-10-12T17:41:04.248414+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NOSC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 3465,
            "accepted_numeric_observations": 3465,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 145,
            "parsed_24_00_numeric_observations": 145,
            "status_flag_counts": {
              "P": 2471,
              "R": 994
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 3465,
            "accepted_numeric_observations": 3465,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 145,
            "parsed_24_00_numeric_observations": 145,
            "status_flag_counts": {
              "P": 2471,
              "R": 994
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6930,
        "parsed_24_00_numeric_observation_count": 290,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 3465,
        "PM2.5": 3465
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/DARF_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b3220dfb7a8df2bbbe4fccc14ad5347d88f7af2cc542204b8e47238128b6262b",
      "byte_count": 339915,
      "retrieved_at_utc": "2026-10-12T17:41:04.612800+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/DARF.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 4641,
            "accepted_numeric_observations": 4641,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 194,
            "parsed_24_00_numeric_observations": 194,
            "status_flag_counts": {
              "P": 2470,
              "R": 2171
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 4641,
            "accepted_numeric_observations": 4641,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 194,
            "parsed_24_00_numeric_observations": 194,
            "status_flag_counts": {
              "P": 2470,
              "R": 2171
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 9282,
        "parsed_24_00_numeric_observation_count": 388,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 4641,
        "PM2.5": 4641
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/ASHC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "e85cf01c7f4092c46982fdae5bb9eb935a9e5ac69e132d3357717285b8b5a938",
      "byte_count": 426613,
      "retrieved_at_utc": "2026-10-12T17:41:04.943786+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/ASHC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13618,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/REMW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "4f6b5318016d4086b448e4c160ace7582dc7b8e52a2b3438ede20d10e4f3db34",
      "byte_count": 394074,
      "retrieved_at_utc": "2026-10-12T17:41:04.954569+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/REMW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 5984,
            "accepted_numeric_observations": 5984,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 3514,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5984,
            "accepted_numeric_observations": 5984,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 3514,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 11968,
        "parsed_24_00_numeric_observation_count": 500,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 5984,
        "PM2.5": 5984
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NCA3_2026.csv?v=1",
      "http_status": 200,
      "sha256": "365beb210c16490af6c1525937a1acca9d0e8193b2fa50e856d8ddecb49152de",
      "byte_count": 702214,
      "retrieved_at_utc": "2026-10-12T17:41:06.603313+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NCA3.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 5914,
            "accepted_numeric_observations": 5914,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4265,
              "P": 1649
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6024,
            "accepted_numeric_observations": 6024,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4291,
              "P": 1733
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5914,
            "accepted_numeric_observations": 5914,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4265,
              "P": 1649
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 17852,
        "parsed_24_00_numeric_observation_count": 749,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6024,
        "PM10": 5914,
        "PM2.5": 5914
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SOTR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "9ae5e58d202a8a2e4c36d684e4b8c71bc10b7bc2d0e84dd7e85a1106bfa64ffa",
      "byte_count": 577838,
      "retrieved_at_utc": "2026-10-12T17:41:07.141231+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SOTR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6680,
            "accepted_numeric_observations": 6680,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4294,
              "P": 2386
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6364,
            "accepted_numeric_observations": 6364,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 267,
            "parsed_24_00_numeric_observations": 267,
            "status_flag_counts": {
              "R": 4118,
              "P": 2246
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13044,
        "parsed_24_00_numeric_observation_count": 548,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6680,
        "PM2.5": 6364
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HSAW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2111c7d9b4a869e2750dea6426a72339d3086dd849fa9f8c53da448042681ea8",
      "byte_count": 865905,
      "retrieved_at_utc": "2026-10-12T17:41:07.195860+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HSAW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6711,
            "accepted_numeric_observations": 6711,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4335,
              "P": 2376
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6515,
            "accepted_numeric_observations": 6515,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 269,
            "parsed_24_00_numeric_observations": 269,
            "status_flag_counts": {
              "R": 4301,
              "P": 2214
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6711,
            "accepted_numeric_observations": 6711,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4335,
              "P": 2376
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19937,
        "parsed_24_00_numeric_observation_count": 829,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6711,
        "PM2.5": 6711,
        "NO2": 6515
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MID",
      "uka_id": "UKA00220",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MID_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b5fdd0df5ce474770e04e94903c7271fc465d1d29f5f4a06d78a109e09bb4650",
      "byte_count": 943514,
      "retrieved_at_utc": "2026-10-12T17:41:07.519612+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MID.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6393,
            "accepted_numeric_observations": 6393,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 266,
            "parsed_24_00_numeric_observations": 266,
            "status_flag_counts": {
              "R": 4078,
              "P": 2315
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6566,
            "accepted_numeric_observations": 6566,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 275,
            "parsed_24_00_numeric_observations": 275,
            "status_flag_counts": {
              "R": 4135,
              "P": 2431
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6480,
            "accepted_numeric_observations": 6480,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 271,
            "parsed_24_00_numeric_observations": 271,
            "status_flag_counts": {
              "R": 4195,
              "P": 2285
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19439,
        "parsed_24_00_numeric_observation_count": 812,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6566,
        "PM2.5": 6480,
        "PM10": 6393
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SUNR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "38293c00faee1dcae82dea30f86c9fde4a3552273f30e5a7f08c7fc1bd23c0fd",
      "byte_count": 604480,
      "retrieved_at_utc": "2026-10-12T17:41:08.164843+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SUNR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6712,
            "accepted_numeric_observations": 6712,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4293,
              "P": 2419
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13519,
        "parsed_24_00_numeric_observation_count": 566,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6807,
        "NO2": 6712
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/EAGL_2026.csv?v=1",
      "http_status": 200,
      "sha256": "913a6cc03c056f390d09e462572a2e0d5db3dab1588298f3d62dc27009d7bcdd",
      "byte_count": 720476,
      "retrieved_at_utc": "2026-10-12T17:41:08.195931+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/EAGL.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6458,
            "accepted_numeric_observations": 6458,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 269,
            "parsed_24_00_numeric_observations": 269,
            "status_flag_counts": {
              "R": 4128,
              "P": 2330
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6676,
            "accepted_numeric_observations": 6676,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4253,
              "P": 2423
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5947,
            "accepted_numeric_observations": 5947,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 3796,
              "P": 2151
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19081,
        "parsed_24_00_numeric_observation_count": 797,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6676,
        "PM10": 6458,
        "PM2.5": 5947
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BLAR",
      "uka_id": "UKA00590",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BLAR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "520250e2348b9b23af1045644947ea4ccc3b9a52c5723e8b48ede7b903f0b1e6",
      "byte_count": 449852,
      "retrieved_at_utc": "2026-10-12T17:41:09.389086+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BLAR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6698,
            "accepted_numeric_observations": 6698,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4285,
              "P": 2413
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6698,
        "parsed_24_00_numeric_observation_count": 280,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6698
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SUN2_2026.csv?v=1",
      "http_status": 200,
      "sha256": "26563abeaac314f257477a997a6cf41bb8b89a3f79c23aef1ccc2c855d18f3b0",
      "byte_count": 855275,
      "retrieved_at_utc": "2026-10-12T17:41:09.454041+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SUN2.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6122,
            "accepted_numeric_observations": 6122,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 256,
            "parsed_24_00_numeric_observations": 256,
            "status_flag_counts": {
              "R": 4287,
              "P": 1835
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19738,
        "parsed_24_00_numeric_observation_count": 824,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6122
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BLWD",
      "uka_id": "UKA01049",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BLWD_2026.csv?v=1",
      "http_status": 200,
      "sha256": "55a9a83e5c160067f35be5da06d5e1ee91c458ae3bc0b2efe0c96c681269cd84",
      "byte_count": 274215,
      "retrieved_at_utc": "2026-10-12T17:41:09.683892+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BLWD.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6812,
        "parsed_24_00_numeric_observation_count": 284,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6812
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BBRD_2026.csv?v=1",
      "http_status": 200,
      "sha256": "ee398c76b6b91949d082fed5a7ad0e323c5bab8b6eda5d0552449e7387fdace8",
      "byte_count": 604190,
      "retrieved_at_utc": "2026-10-12T17:41:09.758381+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BBRD.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6679,
            "accepted_numeric_observations": 6679,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4266,
              "P": 2413
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13489,
        "parsed_24_00_numeric_observation_count": 564,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6810,
        "NO2": 6679
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NEWC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "c65d092f52daf5048052c4fd58b465ac9ff596272a40e9dc9e5e9b7930134533",
      "byte_count": 1381502,
      "retrieved_at_utc": "2026-10-12T17:41:10.086111+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NEWC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6496,
            "accepted_numeric_observations": 6496,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4181,
              "P": 2315
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6699,
            "accepted_numeric_observations": 6699,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4267,
              "P": 2432
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6526,
            "accepted_numeric_observations": 6526,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 273,
            "parsed_24_00_numeric_observations": 273,
            "status_flag_counts": {
              "R": 4183,
              "P": 2343
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19721,
        "parsed_24_00_numeric_observation_count": 825,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6699,
        "PM2.5": 6526,
        "PM10": 6496
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BURW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "1ac8d46d7ae1b777fa770e58910b6c6cd26dae2b4a56bb13fa1179fe5d03927d",
      "byte_count": 605078,
      "retrieved_at_utc": "2026-10-12T17:41:11.348816+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BURW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6532,
            "accepted_numeric_observations": 6532,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 274,
            "parsed_24_00_numeric_observations": 274,
            "status_flag_counts": {
              "R": 4205,
              "P": 2327
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6736,
            "accepted_numeric_observations": 6736,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4295,
              "P": 2441
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13268,
        "parsed_24_00_numeric_observation_count": 557,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10"
      ],
      "parsed_observation_counts": {
        "NO2": 6736,
        "PM10": 6532
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BLC2_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2a58ab7f48ab5055c6b8b14a2671e653b6c381966ea3a5328a375ab8df101464",
      "byte_count": 870211,
      "retrieved_at_utc": "2026-10-12T17:41:11.973405+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BLC2.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6185,
            "accepted_numeric_observations": 6185,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 246,
            "parsed_24_00_numeric_observations": 246,
            "status_flag_counts": {
              "R": 4290,
              "P": 1895
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19809,
        "parsed_24_00_numeric_observation_count": 814,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6812,
        "PM2.5": 6812,
        "NO2": 6185
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BLAP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "59efd1c79f2dd816d095433643c8ae8c15e850594e54a50ca22336fa6c61a5d3",
      "byte_count": 1050311,
      "retrieved_at_utc": "2026-10-12T17:41:12.654893+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BLAP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6803,
            "accepted_numeric_observations": 6803,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2464
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6803,
            "accepted_numeric_observations": 6803,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2464
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13606,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6803,
        "PM2.5": 6803
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LVPT_2026.csv?v=1",
      "http_status": 200,
      "sha256": "db5d882242a09b45a05693a631aa46a0261e1063547a079c059052b219aed08f",
      "byte_count": 541349,
      "retrieved_at_utc": "2026-10-12T17:41:12.665559+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LVPT.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6778,
            "accepted_numeric_observations": 6778,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4340,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6778,
            "accepted_numeric_observations": 6778,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4340,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13556,
        "parsed_24_00_numeric_observation_count": 566,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6778,
        "PM2.5": 6778
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CARM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "bb1fe28a0ccdc4df2f1f392d6c3768c53a2ce79454fd7791bc03b3dd619422a0",
      "byte_count": 728516,
      "retrieved_at_utc": "2026-10-12T17:41:13.201088+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CARM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6367,
            "accepted_numeric_observations": 6367,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 266,
            "parsed_24_00_numeric_observations": 266,
            "status_flag_counts": {
              "R": 3994,
              "P": 2373
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6725,
            "accepted_numeric_observations": 6725,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4304,
              "P": 2421
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6448,
            "accepted_numeric_observations": 6448,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4077,
              "P": 2371
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19540,
        "parsed_24_00_numeric_observation_count": 817,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6725,
        "PM2.5": 6448,
        "PM10": 6367
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MIMW",
      "uka_id": "UKA01051",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MIMW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "da2496209b5e425f19c9ab7880a3759601f0b6894448d0b53e487efd8fcfa827",
      "byte_count": 273933,
      "retrieved_at_utc": "2026-10-12T17:41:13.491703+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MIMW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6806,
        "parsed_24_00_numeric_observation_count": 284,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6806
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/ROCB_2026.csv?v=1",
      "http_status": 200,
      "sha256": "3f8fa43abdfb21c2215d7a2d7c5b7adafd7db90de853bb21ec8fc119de4d15c8",
      "byte_count": 249751,
      "retrieved_at_utc": "2026-10-12T17:41:13.955694+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/ROCB.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 2340,
            "accepted_numeric_observations": 2340,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 98,
            "parsed_24_00_numeric_observations": 98,
            "status_flag_counts": {
              "P": 2340
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2340,
            "accepted_numeric_observations": 2340,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 98,
            "parsed_24_00_numeric_observations": 98,
            "status_flag_counts": {
              "P": 2340
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 4680,
        "parsed_24_00_numeric_observation_count": 196,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 2340,
        "PM2.5": 2340
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/COPP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d1950967fad0d54c2dfcc75db66f244dc5f8df0d88419c7acc45c19a49b084e6",
      "byte_count": 858856,
      "retrieved_at_utc": "2026-10-12T17:41:13.972017+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/COPP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6507,
            "accepted_numeric_observations": 6507,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4293,
              "P": 2214
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20123,
        "parsed_24_00_numeric_observation_count": 840,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6507
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LVP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "3131be144c72a90397f3fcfb78c036f8912a909521b72548ad96fb520c63150a",
      "byte_count": 950372,
      "retrieved_at_utc": "2026-10-12T17:41:14.462704+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LVP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6535,
            "accepted_numeric_observations": 6535,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 274,
            "parsed_24_00_numeric_observations": 274,
            "status_flag_counts": {
              "R": 4200,
              "P": 2335
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6724,
            "accepted_numeric_observations": 6724,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4291,
              "P": 2433
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6373,
            "accepted_numeric_observations": 6373,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 268,
            "parsed_24_00_numeric_observations": 268,
            "status_flag_counts": {
              "R": 4046,
              "P": 2327
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19632,
        "parsed_24_00_numeric_observation_count": 824,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6724,
        "PM10": 6535,
        "PM2.5": 6373
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MAN3_2026.csv?v=1",
      "http_status": 200,
      "sha256": "f00eaa01a5f71664692a64d9f479374cf3035adbc38370c706fd1adcf4e213fe",
      "byte_count": 979858,
      "retrieved_at_utc": "2026-10-12T17:41:14.872086+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MAN3.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6721,
            "accepted_numeric_observations": 6721,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4295,
              "P": 2426
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6701,
            "accepted_numeric_observations": 6701,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4264,
              "P": 2437
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6721,
            "accepted_numeric_observations": 6721,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4295,
              "P": 2426
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20143,
        "parsed_24_00_numeric_observation_count": 840,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6721,
        "PM2.5": 6721,
        "NO2": 6701
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "TAMM",
      "uka_id": "UKA01099",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/TAMM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "9be0e39df2fc7cc8708e17466f29a7b463f09e4a64e7043fc72bef255393d0a4",
      "byte_count": 245942,
      "retrieved_at_utc": "2026-10-12T17:41:15.170291+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/TAMM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6266,
            "accepted_numeric_observations": 6266,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 258,
            "parsed_24_00_numeric_observations": 258,
            "status_flag_counts": {
              "R": 4020,
              "P": 2246
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6266,
        "parsed_24_00_numeric_observation_count": 258,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6266
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CW",
      "uka_id": "UKA00579",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "80cf72ef025c416f2a47649dcb35b93b90e50333802bb81870ce7084ccaab635",
      "byte_count": 453983,
      "retrieved_at_utc": "2026-10-12T17:41:15.663924+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6754,
            "accepted_numeric_observations": 6754,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4317,
              "P": 2437
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6754,
        "parsed_24_00_numeric_observation_count": 283,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6754
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MAHG_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a79883ed30da15179b10d7d010c9d2757f7b30be4ff17087296767e883e7998b",
      "byte_count": 868778,
      "retrieved_at_utc": "2026-10-12T17:41:15.822212+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MAHG.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6766,
            "accepted_numeric_observations": 6766,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4296,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6684,
            "accepted_numeric_observations": 6684,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4270,
              "P": 2414
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6766,
            "accepted_numeric_observations": 6766,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4296,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20216,
        "parsed_24_00_numeric_observation_count": 846,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6766,
        "PM2.5": 6766,
        "NO2": 6684
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WARP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "45ed9cb3c552b51d25133fab2939641557345a13eb9e65a1ffd2f417ef616673",
      "byte_count": 323737,
      "retrieved_at_utc": "2026-10-12T17:41:16.030710+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WARP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 1369,
            "accepted_numeric_observations": 1369,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 57,
            "parsed_24_00_numeric_observations": 57,
            "status_flag_counts": {
              "P": 1369
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 1267,
            "accepted_numeric_observations": 1267,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 54,
            "parsed_24_00_numeric_observations": 54,
            "status_flag_counts": {
              "P": 1267
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 1392,
            "accepted_numeric_observations": 1392,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 58,
            "parsed_24_00_numeric_observations": 58,
            "status_flag_counts": {
              "P": 1392
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 4028,
        "parsed_24_00_numeric_observation_count": 169,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 1392,
        "PM10": 1369,
        "NO2": 1267
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SHLW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "12c72e16b5be344a0a07736ed17ecc686ac446466f46e6c4a6fabc06896fcac7",
      "byte_count": 545801,
      "retrieved_at_utc": "2026-10-12T17:41:16.774591+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SHLW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6409,
            "accepted_numeric_observations": 6409,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 268,
            "parsed_24_00_numeric_observations": 268,
            "status_flag_counts": {
              "R": 4155,
              "P": 2254
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5154,
            "accepted_numeric_observations": 5154,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 217,
            "parsed_24_00_numeric_observations": 217,
            "status_flag_counts": {
              "R": 3003,
              "P": 2151
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 11563,
        "parsed_24_00_numeric_observation_count": 485,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10"
      ],
      "parsed_observation_counts": {
        "PM10": 6409,
        "NO2": 5154
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/PRES_2026.csv?v=1",
      "http_status": 200,
      "sha256": "dd51f3778cbcb99821f2239dd67293ae7a8b110b9ec86df579c863d7ba5580dd",
      "byte_count": 873630,
      "retrieved_at_utc": "2026-10-12T17:41:17.125450+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/PRES.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6726,
            "accepted_numeric_observations": 6726,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4296,
              "P": 2430
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20346,
        "parsed_24_00_numeric_observation_count": 850,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810,
        "NO2": 6726
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WSMR",
      "uka_id": "UKA00603",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WSMR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "99a3e61297c8fa9a2c2dfe85d3329442bff8bf3244ddcbe734caf8043051317c",
      "byte_count": 453910,
      "retrieved_at_utc": "2026-10-12T17:41:17.279393+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WSMR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6724,
            "accepted_numeric_observations": 6724,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4293,
              "P": 2431
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6724,
        "parsed_24_00_numeric_observation_count": 282,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6724
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/ECCL_2026.csv?v=1",
      "http_status": 200,
      "sha256": "679a29df8bb82f19fb03ce9213a8331065dc833816407cb74ce83e7f9dd09fae",
      "byte_count": 875462,
      "retrieved_at_utc": "2026-10-12T17:41:17.643220+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/ECCL.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6801,
            "accepted_numeric_observations": 6801,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4330,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6716,
            "accepted_numeric_observations": 6716,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4284,
              "P": 2432
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6801,
            "accepted_numeric_observations": 6801,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4330,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20318,
        "parsed_24_00_numeric_observation_count": 849,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6801,
        "PM2.5": 6801,
        "NO2": 6716
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BDMA",
      "uka_id": "UKA00611",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BDMA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "343cfd1278704149c1795d006a19e3b66c9ea5b03ba0cf045555a37a479eaa4b",
      "byte_count": 455832,
      "retrieved_at_utc": "2026-10-12T17:41:18.204768+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BDMA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6686,
            "accepted_numeric_observations": 6686,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4257,
              "P": 2429
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6686,
        "parsed_24_00_numeric_observation_count": 279,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6686
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BRWP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "1860c55647cc98b02448dbc45686e2aa5956675ad97126800cb10e1c08b238e3",
      "byte_count": 273922,
      "retrieved_at_utc": "2026-10-12T17:41:18.697456+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BRWP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 2941,
            "accepted_numeric_observations": 2941,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 123,
            "parsed_24_00_numeric_observations": 123,
            "status_flag_counts": {
              "P": 2471,
              "R": 470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2941,
            "accepted_numeric_observations": 2941,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 123,
            "parsed_24_00_numeric_observations": 123,
            "status_flag_counts": {
              "P": 2471,
              "R": 470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 5882,
        "parsed_24_00_numeric_observation_count": 246,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 2941,
        "PM2.5": 2941
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WIG5_2026.csv?v=1",
      "http_status": 200,
      "sha256": "571370afc8426a66734c39779606c2698ae580e1754af6629f1f6ad74c35193d",
      "byte_count": 868530,
      "retrieved_at_utc": "2026-10-12T17:41:19.677717+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WIG5.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6614,
            "accepted_numeric_observations": 6614,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 277,
            "parsed_24_00_numeric_observations": 277,
            "status_flag_counts": {
              "R": 4148,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20226,
        "parsed_24_00_numeric_observation_count": 845,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806,
        "NO2": 6614
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/TRAN_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b7d1f918efaa231e1e3943b624e40c658c16239909417381eaad7871f58a1f87",
      "byte_count": 869041,
      "retrieved_at_utc": "2026-10-12T17:41:20.122082+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/TRAN.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6717,
            "accepted_numeric_observations": 6717,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4287,
              "P": 2430
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20339,
        "parsed_24_00_numeric_observation_count": 849,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6811,
        "PM2.5": 6811,
        "NO2": 6717
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HARW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "39132e600ea734f562ecff73c3ab38594f75ff4aa32be6d2187f2540146a0e1a",
      "byte_count": 425744,
      "retrieved_at_utc": "2026-10-12T17:41:20.374518+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HARW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6788,
            "accepted_numeric_observations": 6788,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4320,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6788,
            "accepted_numeric_observations": 6788,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4320,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13576,
        "parsed_24_00_numeric_observation_count": 566,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6788,
        "PM2.5": 6788
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/DCST_2026.csv?v=1",
      "http_status": 200,
      "sha256": "5a4fe74c8b06def091fe5f627b44fd4dec256347753e92b3edb6d7dd15e70d85",
      "byte_count": 611975,
      "retrieved_at_utc": "2026-10-12T17:41:20.782535+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/DCST.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6744,
            "accepted_numeric_observations": 6744,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4298,
              "P": 2446
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13555,
        "parsed_24_00_numeric_observation_count": 567,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6811,
        "NO2": 6744
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BRAS_2026.csv?v=1",
      "http_status": 200,
      "sha256": "56c17d0aa58283a67e17f2be698473230adbf3f792a02952fecdbe34bfd78e42",
      "byte_count": 879184,
      "retrieved_at_utc": "2026-10-12T17:41:21.588913+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BRAS.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13618,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/DYAG_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a43a2757b89e7e1211c2d1026c27b755097d6feb63a93d9c459815f56155a3b3",
      "byte_count": 860655,
      "retrieved_at_utc": "2026-10-12T17:41:21.718176+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/DYAG.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6797,
            "accepted_numeric_observations": 6797,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2460
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6408,
            "accepted_numeric_observations": 6408,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 266,
            "parsed_24_00_numeric_observations": 266,
            "status_flag_counts": {
              "R": 4030,
              "P": 2378
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6797,
            "accepted_numeric_observations": 6797,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2460
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20002,
        "parsed_24_00_numeric_observation_count": 834,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6797,
        "PM2.5": 6797,
        "NO2": 6408
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BAR3_2026.csv?v=1",
      "http_status": 200,
      "sha256": "460d57e2e87de572d4426d747fb2f9358542922016525c78841fe35591f95587",
      "byte_count": 1478464,
      "retrieved_at_utc": "2026-10-12T17:41:23.266747+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BAR3.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6390,
            "accepted_numeric_observations": 6390,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 267,
            "parsed_24_00_numeric_observations": 267,
            "status_flag_counts": {
              "R": 4338,
              "P": 2052
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6721,
            "accepted_numeric_observations": 6721,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4296,
              "P": 2425
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6390,
            "accepted_numeric_observations": 6390,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 267,
            "parsed_24_00_numeric_observations": 267,
            "status_flag_counts": {
              "R": 4338,
              "P": 2052
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19501,
        "parsed_24_00_numeric_observation_count": 816,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6721,
        "PM10": 6390,
        "PM2.5": 6390
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HULR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "c45b572ba7ad219d9ef6dc4d6abe97cfa1ca86d5970ba1231308cb778596561c",
      "byte_count": 762432,
      "retrieved_at_utc": "2026-10-12T17:41:23.597282+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HULR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6734,
            "accepted_numeric_observations": 6734,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4265,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6712,
            "accepted_numeric_observations": 6712,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4286,
              "P": 2426
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6734,
            "accepted_numeric_observations": 6734,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4265,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20180,
        "parsed_24_00_numeric_observation_count": 843,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6734,
        "PM2.5": 6734,
        "NO2": 6712
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HUL2_2026.csv?v=1",
      "http_status": 200,
      "sha256": "036151a15f82137e76821cf39d0b09a162a01058e4cced5313ecf83ad82aad68",
      "byte_count": 970631,
      "retrieved_at_utc": "2026-10-12T17:41:23.612854+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HUL2.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6711,
            "accepted_numeric_observations": 6711,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4295,
              "P": 2416
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20329,
        "parsed_24_00_numeric_observation_count": 850,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809,
        "NO2": 6711
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/ROED_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a7f67ef534201c5f334f35d4d45dcb7956186074b295dac4bde44c0e7271b654",
      "byte_count": 428007,
      "retrieved_at_utc": "2026-10-12T17:41:23.804388+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/ROED.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13620,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LED6_2026.csv?v=1",
      "http_status": 200,
      "sha256": "6ab27185201a31a4eee83ad2a0fe397d8e719fe8d356d5f2c190781659fef88e",
      "byte_count": 717106,
      "retrieved_at_utc": "2026-10-12T17:41:24.230970+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LED6.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6390,
            "accepted_numeric_observations": 6390,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 269,
            "parsed_24_00_numeric_observations": 269,
            "status_flag_counts": {
              "R": 4245,
              "P": 2145
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6347,
            "accepted_numeric_observations": 6347,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 265,
            "parsed_24_00_numeric_observations": 265,
            "status_flag_counts": {
              "R": 4291,
              "P": 2056
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6027,
            "accepted_numeric_observations": 6027,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 254,
            "parsed_24_00_numeric_observations": 254,
            "status_flag_counts": {
              "R": 3886,
              "P": 2141
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 18764,
        "parsed_24_00_numeric_observation_count": 788,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6390,
        "NO2": 6347,
        "PM2.5": 6027
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/IMGM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "c1400aadc96894c6e0921d3583c35be4b656009ba4975af88ae57dd73c9b5c14",
      "byte_count": 870185,
      "retrieved_at_utc": "2026-10-12T17:41:24.571938+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/IMGM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6722,
            "accepted_numeric_observations": 6722,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4295,
              "P": 2427
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20343,
        "parsed_24_00_numeric_observation_count": 850,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6811,
        "PM10": 6810,
        "NO2": 6722
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LEED_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b8e657ee6d378cd6e0cabb2c8281547c59d2d9e0d9c33eb060452b14fde5514c",
      "byte_count": 1097931,
      "retrieved_at_utc": "2026-10-12T17:41:25.842006+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LEED.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.3"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.6"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6744,
            "accepted_numeric_observations": 6744,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4306,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20366,
        "parsed_24_00_numeric_observation_count": 850,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Carbon monoxide",
        "status",
        "unit",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6811,
        "PM2.5": 6811,
        "NO2": 6744
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SCN2_2026.csv?v=1",
      "http_status": 200,
      "sha256": "28fcb4c95ca139d77b05f77de67140f05ecf766b00370e85b51124b34ec27947",
      "byte_count": 840557,
      "retrieved_at_utc": "2026-10-12T17:41:25.902616+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SCN2.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6534,
            "accepted_numeric_observations": 6534,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4243,
              "P": 2291
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6702,
            "accepted_numeric_observations": 6702,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4285,
              "P": 2417
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6598,
            "accepted_numeric_observations": 6598,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4233,
              "P": 2365
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19834,
        "parsed_24_00_numeric_observation_count": 833,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6702,
        "PM2.5": 6598,
        "PM10": 6534
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WAKA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2a55eac6e58c4b99913e5f9724a385c0ad4429c388da53f99219f5f14e956025",
      "byte_count": 428294,
      "retrieved_at_utc": "2026-10-12T17:41:25.978501+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WAKA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13618,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SHBR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "74f51d8126ba7f05166eaa899d86767063f83e0b5a5f1ec7ac5e6a34714644b9",
      "byte_count": 584967,
      "retrieved_at_utc": "2026-10-12T17:41:26.145213+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SHBR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6675,
            "accepted_numeric_observations": 6675,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4244,
              "P": 2431
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6259,
            "accepted_numeric_observations": 6259,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 263,
            "parsed_24_00_numeric_observations": 263,
            "status_flag_counts": {
              "R": 3892,
              "P": 2367
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 12934,
        "parsed_24_00_numeric_observation_count": 543,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6675,
        "PM2.5": 6259
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SHDG_2026.csv?v=1",
      "http_status": 200,
      "sha256": "3cca3afe6b716365e9e937bb83b0d11c92ad6bc90140c9ece72a5dc0a511010d",
      "byte_count": 835577,
      "retrieved_at_utc": "2026-10-12T17:41:27.748487+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SHDG.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6336,
            "accepted_numeric_observations": 6336,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 265,
            "parsed_24_00_numeric_observations": 265,
            "status_flag_counts": {
              "R": 3972,
              "P": 2364
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6339,
            "accepted_numeric_observations": 6339,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 267,
            "parsed_24_00_numeric_observations": 267,
            "status_flag_counts": {
              "R": 3938,
              "P": 2401
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6336,
            "accepted_numeric_observations": 6336,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 265,
            "parsed_24_00_numeric_observations": 265,
            "status_flag_counts": {
              "R": 3972,
              "P": 2364
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19011,
        "parsed_24_00_numeric_observation_count": 797,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6339,
        "PM10": 6336,
        "PM2.5": 6336
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SHE_2026.csv?v=1",
      "http_status": 200,
      "sha256": "97bb8a384c07d5f1113fb3dad3cc39a296a6f047f66eb0a2ae5d00123e127796",
      "byte_count": 875160,
      "retrieved_at_utc": "2026-10-12T17:41:28.091156+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SHE.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6791,
            "accepted_numeric_observations": 6791,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4342,
              "P": 2449
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6715,
            "accepted_numeric_observations": 6715,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4297,
              "P": 2418
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6791,
            "accepted_numeric_observations": 6791,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4342,
              "P": 2449
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20297,
        "parsed_24_00_numeric_observation_count": 845,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6791,
        "PM2.5": 6791,
        "NO2": 6715
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/YK10_2026.csv?v=1",
      "http_status": 200,
      "sha256": "ad5c90795b5f517ee6edadf158d8dd6dd90280af9d4c95fcae2dbcde101901e8",
      "byte_count": 848407,
      "retrieved_at_utc": "2026-10-12T17:41:28.479521+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/YK10.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6525,
            "accepted_numeric_observations": 6525,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 274,
            "parsed_24_00_numeric_observations": 274,
            "status_flag_counts": {
              "R": 4141,
              "P": 2384
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6722,
            "accepted_numeric_observations": 6722,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4303,
              "P": 2419
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6597,
            "accepted_numeric_observations": 6597,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 277,
            "parsed_24_00_numeric_observations": 277,
            "status_flag_counts": {
              "R": 4220,
              "P": 2377
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19844,
        "parsed_24_00_numeric_observation_count": 832,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6722,
        "PM2.5": 6597,
        "PM10": 6525
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/YK11_2026.csv?v=1",
      "http_status": 200,
      "sha256": "af3051bd33e67c5cd880ac28248d43f75639f1c9ea1f1eb0a9efc4fa472a3a1c",
      "byte_count": 736718,
      "retrieved_at_utc": "2026-10-12T17:41:28.483255+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/YK11.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6469,
            "accepted_numeric_observations": 6469,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4178,
              "P": 2291
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6713,
            "accepted_numeric_observations": 6713,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4289,
              "P": 2424
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6455,
            "accepted_numeric_observations": 6455,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4156,
              "P": 2299
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19637,
        "parsed_24_00_numeric_observation_count": 824,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6713,
        "PM10": 6469,
        "PM2.5": 6455
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/DESA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "ecd173148c2fb349b401ccfbf8a563ece6bb21c8a566ab8c605f89d43b45c02f",
      "byte_count": 613389,
      "retrieved_at_utc": "2026-10-12T17:41:29.165640+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/DESA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6740,
            "accepted_numeric_observations": 6740,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4311,
              "P": 2429
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13549,
        "parsed_24_00_numeric_observation_count": 567,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6809,
        "NO2": 6740
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CHS7_2026.csv?v=1",
      "http_status": 200,
      "sha256": "28e2bdacb26160886e74bf9d130e082b0236e8b4976c9027fe71ddc8339a6f51",
      "byte_count": 756803,
      "retrieved_at_utc": "2026-10-12T17:41:29.702104+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CHS7.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6643,
            "accepted_numeric_observations": 6643,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4240,
              "P": 2403
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20257,
        "parsed_24_00_numeric_observation_count": 848,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6807,
        "PM2.5": 6807,
        "NO2": 6643
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CHLG_2026.csv?v=1",
      "http_status": 200,
      "sha256": "0095882f24b53dcba4a1ecacb4b0a64a2cdd2a3ffb3fab6805488a6689432202",
      "byte_count": 859297,
      "retrieved_at_utc": "2026-10-12T17:41:30.336808+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CHLG.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6562,
            "accepted_numeric_observations": 6562,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 276,
            "parsed_24_00_numeric_observations": 276,
            "status_flag_counts": {
              "R": 4197,
              "P": 2365
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20180,
        "parsed_24_00_numeric_observation_count": 844,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809,
        "NO2": 6562
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LIN3",
      "uka_id": "UKA00561",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LIN3_2026.csv?v=1",
      "http_status": 200,
      "sha256": "69008b13777977f4a55facd78359daf3f85642a9d472dd926aa475ca9416ef9f",
      "byte_count": 346409,
      "retrieved_at_utc": "2026-10-12T17:41:30.364383+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LIN3.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 4097,
            "accepted_numeric_observations": 4097,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 172,
            "parsed_24_00_numeric_observations": 172,
            "status_flag_counts": {
              "P": 2302,
              "R": 1795
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 4097,
        "parsed_24_00_numeric_observation_count": 172,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 4097
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LOTA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "82f1f4527a34d5ea644c6e4d3c9681f410694ac322d78dd8a548a954df07218f",
      "byte_count": 426529,
      "retrieved_at_utc": "2026-10-12T17:41:30.683277+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LOTA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13620,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MALA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "026b793a43b3e3d1794b9343786b9e096cdc6911492b4475f082afba1eb7b38d",
      "byte_count": 427091,
      "retrieved_at_utc": "2026-10-12T17:41:31.335781+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MALA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13612,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/DESB_2026.csv?v=1",
      "http_status": 200,
      "sha256": "0da9d67db81e87c01bf1fe4d57e7acca6646ca837c998340a1093da4982fed9a",
      "byte_count": 1071239,
      "retrieved_at_utc": "2026-10-12T17:41:31.636201+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/DESB.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13616,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LEIR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "5dd55b14c86a6831fcef31e19a571e4de08a6fac1bf4862d9107115f79220231",
      "byte_count": 764700,
      "retrieved_at_utc": "2026-10-12T17:41:31.648378+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LEIR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6736,
            "accepted_numeric_observations": 6736,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4269,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6727,
            "accepted_numeric_observations": 6727,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4287,
              "P": 2440
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6736,
            "accepted_numeric_observations": 6736,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4269,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20199,
        "parsed_24_00_numeric_observation_count": 843,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6736,
        "PM2.5": 6736,
        "NO2": 6727
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NOTB_2026.csv?v=1",
      "http_status": 200,
      "sha256": "cd0544e4ff335ed056ffae7fa6910518305d0ec01cacae12bded819088edfdc3",
      "byte_count": 426899,
      "retrieved_at_utc": "2026-10-12T17:41:32.711650+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NOTB.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13624,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6812,
        "PM2.5": 6812
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WIGS_2026.csv?v=1",
      "http_status": 200,
      "sha256": "ae8c350782e58f19fa277d302a67a4d5242d141be622c6496c4c43c0f3e75c9d",
      "byte_count": 200894,
      "retrieved_at_utc": "2026-10-12T17:41:32.743101+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WIGS.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 1113,
            "accepted_numeric_observations": 1113,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 47,
            "parsed_24_00_numeric_observations": 47,
            "status_flag_counts": {
              "P": 1113
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 1113,
            "accepted_numeric_observations": 1113,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 47,
            "parsed_24_00_numeric_observations": 47,
            "status_flag_counts": {
              "P": 1113
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 2226,
        "parsed_24_00_numeric_observation_count": 94,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 1113,
        "PM2.5": 1113
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LECU_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b443ac18b621cb7636298ddcf561dcb21336a5271c04fe93de930839238fb0e0",
      "byte_count": 865725,
      "retrieved_at_utc": "2026-10-12T17:41:32.759864+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LECU.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6586,
            "accepted_numeric_observations": 6586,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 275,
            "parsed_24_00_numeric_observations": 275,
            "status_flag_counts": {
              "R": 4118,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6745,
            "accepted_numeric_observations": 6745,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4314,
              "P": 2431
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6586,
            "accepted_numeric_observations": 6586,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 275,
            "parsed_24_00_numeric_observations": 275,
            "status_flag_counts": {
              "R": 4118,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19917,
        "parsed_24_00_numeric_observation_count": 833,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6745,
        "PM10": 6586,
        "PM2.5": 6586
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NTN4_2026.csv?v=1",
      "http_status": 200,
      "sha256": "8e16ed2f3f8056dcb22a71e0b671ca6aaeff08a97c9d213065338f05c8e603e1",
      "byte_count": 663487,
      "retrieved_at_utc": "2026-10-12T17:41:33.214705+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NTN4.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6633,
            "accepted_numeric_observations": 6633,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 278,
            "parsed_24_00_numeric_observations": 278,
            "status_flag_counts": {
              "R": 4198,
              "P": 2435
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 4986,
            "accepted_numeric_observations": 4986,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 211,
            "parsed_24_00_numeric_observations": 211,
            "status_flag_counts": {
              "R": 2916,
              "P": 2070
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 11619,
        "parsed_24_00_numeric_observation_count": 489,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6633,
        "PM2.5": 4986
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BEDC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "95608942cbd151f831df5d24bfba773cbffdad1aeea9b7c91600b7e4c4baea82",
      "byte_count": 291589,
      "retrieved_at_utc": "2026-10-12T17:41:33.229428+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BEDC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 3400,
            "accepted_numeric_observations": 3400,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 142,
            "parsed_24_00_numeric_observations": 142,
            "status_flag_counts": {
              "P": 2379,
              "R": 1021
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 3400,
            "accepted_numeric_observations": 3400,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 142,
            "parsed_24_00_numeric_observations": 142,
            "status_flag_counts": {
              "P": 2379,
              "R": 1021
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6800,
        "parsed_24_00_numeric_observation_count": 284,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 3400,
        "PM2.5": 3400
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NWBV_2026.csv?v=1",
      "http_status": 200,
      "sha256": "c5f920af75a94b9feaad0ba65782993c5bde9f5ac95b89db8760020ce17cacc9",
      "byte_count": 757997,
      "retrieved_at_utc": "2026-10-12T17:41:34.491485+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NWBV.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6559,
            "accepted_numeric_observations": 6559,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 276,
            "parsed_24_00_numeric_observations": 276,
            "status_flag_counts": {
              "R": 4101,
              "P": 2458
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20169,
        "parsed_24_00_numeric_observation_count": 844,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6805,
        "PM2.5": 6805,
        "NO2": 6559
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BAQF_2026.csv?v=1",
      "http_status": 200,
      "sha256": "e2967dc2c7a15377f933b7651b89848b1d0b0c0522da1c34d7237f82fad677ec",
      "byte_count": 426625,
      "retrieved_at_utc": "2026-10-12T17:41:34.933845+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BAQF.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13620,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NOTK_2026.csv?v=1",
      "http_status": 200,
      "sha256": "608c9bca03a6f883b27ec428dfd6c808a71fcfbf14ca118ac30187ed89f91982",
      "byte_count": 962291,
      "retrieved_at_utc": "2026-10-12T17:41:35.150237+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NOTK.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6578,
            "accepted_numeric_observations": 6578,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 276,
            "parsed_24_00_numeric_observations": 276,
            "status_flag_counts": {
              "R": 4138,
              "P": 2440
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20194,
        "parsed_24_00_numeric_observation_count": 844,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6578
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CANK_2026.csv?v=1",
      "http_status": 200,
      "sha256": "9ae7137a25c1a42a5832d73a6876a042a124165974514b4c84ed8fe8a0866486",
      "byte_count": 607144,
      "retrieved_at_utc": "2026-10-12T17:41:36.378306+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CANK.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6769,
            "accepted_numeric_observations": 6769,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4319,
              "P": 2450
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13577,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6808,
        "NO2": 6769
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BIHG_2026.csv?v=1",
      "http_status": 200,
      "sha256": "3a9ab11b83c5e94e4fe3996def0a83d7ab182631dc6a5a4b797aca400456f8c4",
      "byte_count": 868299,
      "retrieved_at_utc": "2026-10-12T17:41:37.160566+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BIHG.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6705,
            "accepted_numeric_observations": 6705,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4336,
              "P": 2369
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6748,
            "accepted_numeric_observations": 6748,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4315,
              "P": 2433
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6705,
            "accepted_numeric_observations": 6705,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4336,
              "P": 2369
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20158,
        "parsed_24_00_numeric_observation_count": 843,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6748,
        "PM10": 6705,
        "PM2.5": 6705
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BOTR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "4f1b2f4a84e032f83a825587861c4cb1e424d7e93843fcba8a97cc5bb6233a3a",
      "byte_count": 837364,
      "retrieved_at_utc": "2026-10-12T17:41:37.373551+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BOTR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6779,
            "accepted_numeric_observations": 6779,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4341,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6011,
            "accepted_numeric_observations": 6011,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 3655,
              "P": 2356
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6779,
            "accepted_numeric_observations": 6779,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4341,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19569,
        "parsed_24_00_numeric_observation_count": 815,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6779,
        "PM2.5": 6779,
        "NO2": 6011
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BIRR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d799dcc9a1374744ac1aafc6e18d83dda8cb2c8994cac975423562cc49667e56",
      "byte_count": 1226540,
      "retrieved_at_utc": "2026-10-12T17:41:37.720255+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BIRR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6727,
            "accepted_numeric_observations": 6727,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4332,
              "P": 2395
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20343,
        "parsed_24_00_numeric_observation_count": 849,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6727
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/COAL_2026.csv?v=1",
      "http_status": 200,
      "sha256": "f31541c684469d6a006e199d3d51050cb4fded3e335d8fe08e47900dfcb12f4b",
      "byte_count": 851139,
      "retrieved_at_utc": "2026-10-12T17:41:38.636597+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/COAL.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6178,
            "accepted_numeric_observations": 6178,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 257,
            "parsed_24_00_numeric_observations": 257,
            "status_flag_counts": {
              "R": 3988,
              "P": 2190
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19790,
        "parsed_24_00_numeric_observation_count": 825,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806,
        "NO2": 6178
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/COBR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b2f35c6eebfc8fe341f8d9c3be984c137ca5cd68202ac968cb8d3077ff247c64",
      "byte_count": 763381,
      "retrieved_at_utc": "2026-10-12T17:41:38.790463+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/COBR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6790,
            "accepted_numeric_observations": 6790,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4323,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6709,
            "accepted_numeric_observations": 6709,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4254,
              "P": 2455
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6790,
            "accepted_numeric_observations": 6790,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4323,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20289,
        "parsed_24_00_numeric_observation_count": 847,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6790,
        "PM2.5": 6790,
        "NO2": 6709
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LEAM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a124c4f2d51c9b823204dafe0782c7d3259e3de7adc0ee5f66d9c968ba1111d9",
      "byte_count": 874165,
      "retrieved_at_utc": "2026-10-12T17:41:39.601592+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LEAM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6776,
            "accepted_numeric_observations": 6776,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4311,
              "P": 2465
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20392,
        "parsed_24_00_numeric_observation_count": 851,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6776
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BMLD_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a663e5447f972f3e33eb4c188167e5707279f3d71f893106294cda20881322ad",
      "byte_count": 1423194,
      "retrieved_at_utc": "2026-10-12T17:41:39.784853+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BMLD.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6670,
            "accepted_numeric_observations": 6670,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4254,
              "P": 2416
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6736,
            "accepted_numeric_observations": 6736,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4298,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6670,
            "accepted_numeric_observations": 6670,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4254,
              "P": 2416
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20076,
        "parsed_24_00_numeric_observation_count": 840,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6736,
        "PM10": 6670,
        "PM2.5": 6670
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LEOM",
      "uka_id": "UKA00489",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LEOM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "7c0554991e3f9b470f0b27826a5527b35f3d6b37b71531dcb305539c903a4ebf",
      "byte_count": 553323,
      "retrieved_at_utc": "2026-10-12T17:41:39.965072+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LEOM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6525,
            "accepted_numeric_observations": 6525,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 275,
            "parsed_24_00_numeric_observations": 275,
            "status_flag_counts": {
              "R": 4191,
              "P": 2334
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6525,
        "parsed_24_00_numeric_observation_count": 275,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6525
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LEAR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "7e6ff3171d9cf4e1cfaedb47c0b76556b241f006807a55114713630846cd8912",
      "byte_count": 750640,
      "retrieved_at_utc": "2026-10-12T17:41:40.180092+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LEAR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6695,
            "accepted_numeric_observations": 6695,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4325,
              "P": 2370
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6528,
            "accepted_numeric_observations": 6528,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 274,
            "parsed_24_00_numeric_observations": 274,
            "status_flag_counts": {
              "R": 4310,
              "P": 2218
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6695,
            "accepted_numeric_observations": 6695,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4325,
              "P": 2370
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19918,
        "parsed_24_00_numeric_observation_count": 832,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6695,
        "PM2.5": 6695,
        "NO2": 6528
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BOLD_2026.csv?v=1",
      "http_status": 200,
      "sha256": "07c1a0b7f66d55f59aa672d998fc79aee36dd09e55b1ee79242f9054b92ccfaa",
      "byte_count": 767278,
      "retrieved_at_utc": "2026-10-12T17:41:41.190791+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BOLD.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6770,
            "accepted_numeric_observations": 6770,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4300,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6776,
            "accepted_numeric_observations": 6776,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4312,
              "P": 2464
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6770,
            "accepted_numeric_observations": 6770,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4300,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20316,
        "parsed_24_00_numeric_observation_count": 849,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6776,
        "PM10": 6770,
        "PM2.5": 6770
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WALD_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b970adc8db451041181e8a5dce217f21c7f8b5e9ed35229e89b5876723a22db5",
      "byte_count": 425785,
      "retrieved_at_utc": "2026-10-12T17:41:41.961273+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WALD.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6768,
            "accepted_numeric_observations": 6768,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4300,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6768,
            "accepted_numeric_observations": 6768,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4300,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13536,
        "parsed_24_00_numeric_observation_count": 564,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6768,
        "PM2.5": 6768
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SHUN_2026.csv?v=1",
      "http_status": 200,
      "sha256": "26fcb769c3dbc876a5253a96a130e9bd1fa7b2f16ebe3c7c96ad5890e5e7364a",
      "byte_count": 892824,
      "retrieved_at_utc": "2026-10-12T17:41:42.166744+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SHUN.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13620,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WOLE_2026.csv?v=1",
      "http_status": 200,
      "sha256": "f9c5edbd80534b1781f7ddda4a7b5cc4c5a78fd8952cb66e73886a98b0de913f",
      "byte_count": 254557,
      "retrieved_at_utc": "2026-10-12T17:41:42.469919+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WOLE.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 2462,
            "accepted_numeric_observations": 2462,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 103,
            "parsed_24_00_numeric_observations": 103,
            "status_flag_counts": {
              "P": 2462
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2462,
            "accepted_numeric_observations": 2462,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 103,
            "parsed_24_00_numeric_observations": 103,
            "status_flag_counts": {
              "P": 2462
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 4924,
        "parsed_24_00_numeric_observation_count": 206,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 2462,
        "PM2.5": 2462
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/STKR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "3ad1026ad776831e5af5ddac09e2ccba3ce87cf74f38cf123577939354c45134",
      "byte_count": 767626,
      "retrieved_at_utc": "2026-10-12T17:41:42.518555+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/STKR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6670,
            "accepted_numeric_observations": 6670,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4291,
              "P": 2379
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20292,
        "parsed_24_00_numeric_observation_count": 848,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6811,
        "PM2.5": 6811,
        "NO2": 6670
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WAL4",
      "uka_id": "UKA00565",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WAL4_2026.csv?v=1",
      "http_status": 200,
      "sha256": "4a4cdddc30292bc96db662b2708d3aedca1ec7c67619b62ed7c4ed4e88da6345",
      "byte_count": 560735,
      "retrieved_at_utc": "2026-10-12T17:41:42.774341+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WAL4.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6741,
            "accepted_numeric_observations": 6741,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4309,
              "P": 2432
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6741,
        "parsed_24_00_numeric_observation_count": 282,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6741
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/STOK_2026.csv?v=1",
      "http_status": 200,
      "sha256": "ad9cca2053240d0556f627a8d785139774dadfd3cafbbe3dc7816ef605cc0572",
      "byte_count": 828084,
      "retrieved_at_utc": "2026-10-12T17:41:42.930665+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/STOK.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5552,
            "accepted_numeric_observations": 5552,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 233,
            "parsed_24_00_numeric_observations": 233,
            "status_flag_counts": {
              "R": 3118,
              "P": 2434
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19170,
        "parsed_24_00_numeric_observation_count": 801,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809,
        "NO2": 5552
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WBKP",
      "uka_id": "UKA00658",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WBKP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "6e022f2a348747a4756e2d0e93d00a0eacdbb1280695b3877c9aefcb477d127b",
      "byte_count": 552665,
      "retrieved_at_utc": "2026-10-12T17:41:42.992599+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WBKP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6448,
            "accepted_numeric_observations": 6448,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4019,
              "P": 2429
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6448,
        "parsed_24_00_numeric_observation_count": 270,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6448
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/TDHD_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2b38265af7988ce930b1366d59f44a307acc6c13128a3e622765be7df03b3e86",
      "byte_count": 864182,
      "retrieved_at_utc": "2026-10-12T17:41:44.145638+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/TDHD.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6557,
            "accepted_numeric_observations": 6557,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4178,
              "P": 2379
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20175,
        "parsed_24_00_numeric_observation_count": 840,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809,
        "NO2": 6557
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WORT_2026.csv?v=1",
      "http_status": 200,
      "sha256": "3909778b53d3f450a17e51553e1ad5945c531a8bbc48274175f577e0fd307077",
      "byte_count": 426270,
      "retrieved_at_utc": "2026-10-12T17:41:44.181156+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WORT.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13610,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6805,
        "PM2.5": 6805
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CAMK_2026.csv?v=1",
      "http_status": 200,
      "sha256": "ad9c04e5cc845028b30db2c4374a2e0c4a751e357e17a4fdf46f22bb465d28e9",
      "byte_count": 427455,
      "retrieved_at_utc": "2026-10-12T17:41:44.359305+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CAMK.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13620,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CAM",
      "uka_id": "UKA00396",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CAM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "725c51094a3900eb465e1ce72165810958512f69d76f2e7e1cd5e2dcb97f2b31",
      "byte_count": 445949,
      "retrieved_at_utc": "2026-10-12T17:41:44.647138+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CAM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6423,
            "accepted_numeric_observations": 6423,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4285,
              "P": 2138
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6423,
        "parsed_24_00_numeric_observation_count": 270,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6423
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/PEGE_2026.csv?v=1",
      "http_status": 200,
      "sha256": "321e8b30dbe9c77643c82ebe6554fcab0ea6a34dd02125b28c1418d64a837997",
      "byte_count": 427177,
      "retrieved_at_utc": "2026-10-12T17:41:45.135820+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/PEGE.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13614,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6807,
        "PM2.5": 6807
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SOUS_2026.csv?v=1",
      "http_status": 200,
      "sha256": "596851659d68da3e062c537e1bbbc7fa00450e9800385ea188c74a761eea5196",
      "byte_count": 396223,
      "retrieved_at_utc": "2026-10-12T17:41:45.188306+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SOUS.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6026,
            "accepted_numeric_observations": 6026,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4341,
              "P": 1685
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6026,
            "accepted_numeric_observations": 6026,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4341,
              "P": 1685
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 12052,
        "parsed_24_00_numeric_observation_count": 500,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6026,
        "PM2.5": 6026
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "STGW",
      "uka_id": "UKA01156",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/STGW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "4bb9862bbc31fb0f5ab9d94729a3bc0a0911cb1395a59dccd052584a6801a587",
      "byte_count": 199177,
      "retrieved_at_utc": "2026-10-12T17:41:45.403560+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/STGW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 3111,
            "accepted_numeric_observations": 3111,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 129,
            "parsed_24_00_numeric_observations": 129,
            "status_flag_counts": {
              "R": 1692,
              "P": 1419
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 3111,
        "parsed_24_00_numeric_observation_count": 129,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 3111
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LUTR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "f0152ccdae16393112a597988e3ae41b3971aa850897a48fc5b177b42feac4f3",
      "byte_count": 615386,
      "retrieved_at_utc": "2026-10-12T17:41:45.661429+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LUTR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6734,
            "accepted_numeric_observations": 6734,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4297,
              "P": 2437
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13545,
        "parsed_24_00_numeric_observation_count": 566,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6811,
        "NO2": 6734
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LONC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "05c6bf6049506346f1bf1a45d5d25834001814c436404da4c7fad3b4338d6d5d",
      "byte_count": 291352,
      "retrieved_at_utc": "2026-10-12T17:41:45.870305+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LONC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6628,
            "accepted_numeric_observations": 6628,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 277,
            "parsed_24_00_numeric_observations": 277,
            "status_flag_counts": {
              "R": 4160,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6628,
        "parsed_24_00_numeric_observation_count": 277,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6628
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/NO12_2026.csv?v=1",
      "http_status": 200,
      "sha256": "f2afdd636a4900db8e0151199d891338d3d9c7d4d4deca057d694e3122b39506",
      "byte_count": 870425,
      "retrieved_at_utc": "2026-10-12T17:41:47.228747+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/NO12.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6742,
            "accepted_numeric_observations": 6742,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4301,
              "P": 2441
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20366,
        "parsed_24_00_numeric_observation_count": 850,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6812,
        "PM2.5": 6812,
        "NO2": 6742
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/LONM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "bf8b3ac7299c4a84b29103f5ea89fa4f5d30e78ac943b322aed2fd74255f01c0",
      "byte_count": 427375,
      "retrieved_at_utc": "2026-10-12T17:41:47.597947+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/LONM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13622,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6811,
        "PM2.5": 6811
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SEND_2026.csv?v=1",
      "http_status": 200,
      "sha256": "db6b026461985db6470bce760314c439a60685e049762ac42febbb179a7505e1",
      "byte_count": 847671,
      "retrieved_at_utc": "2026-10-12T17:41:48.291142+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SEND.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2464
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6116,
            "accepted_numeric_observations": 6116,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 256,
            "parsed_24_00_numeric_observations": 256,
            "status_flag_counts": {
              "R": 3671,
              "P": 2445
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2464
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19726,
        "parsed_24_00_numeric_observation_count": 824,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6805,
        "PM2.5": 6805,
        "NO2": 6116
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "AYLA",
      "uka_id": "UKA01109",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/AYLA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "127d86eec49ea1ee2460f583bf75c88ac165c900965956272186aa12df03e554",
      "byte_count": 273716,
      "retrieved_at_utc": "2026-10-12T17:41:48.734201+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/AYLA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6811,
        "parsed_24_00_numeric_observation_count": 284,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6811
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CLL2_2026.csv?v=1",
      "http_status": 200,
      "sha256": "88eb50164c317c6b48d451f048126db738aecc97568a7acf8125e41b6006a94d",
      "byte_count": 965997,
      "retrieved_at_utc": "2026-10-12T17:41:49.447427+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CLL2.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6782,
            "accepted_numeric_observations": 6782,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4339,
              "P": 2443
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6600,
            "accepted_numeric_observations": 6600,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 277,
            "parsed_24_00_numeric_observations": 277,
            "status_flag_counts": {
              "R": 4172,
              "P": 2428
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6782,
            "accepted_numeric_observations": 6782,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4339,
              "P": 2443
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20164,
        "parsed_24_00_numeric_observation_count": 843,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6782,
        "PM2.5": 6782,
        "NO2": 6600
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HORS_2026.csv?v=1",
      "http_status": 200,
      "sha256": "e6c191cfe12aeccc6691c62f29ace5e7f4f3d78c13a9b05e3e520eab6071a1aa",
      "byte_count": 722153,
      "retrieved_at_utc": "2026-10-12T17:41:49.701515+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HORS.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6732,
            "accepted_numeric_observations": 6732,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4294,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13543,
        "parsed_24_00_numeric_observation_count": 566,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6811,
        "NO2": 6732
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HRL_2026.csv?v=1",
      "http_status": 200,
      "sha256": "24cca9d7e5997b976bc25bad198ab85703703460245b4416659752387085b379",
      "byte_count": 878391,
      "retrieved_at_utc": "2026-10-12T17:41:49.711594+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HRL.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4340,
              "P": 2465
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6780,
            "accepted_numeric_observations": 6780,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4323,
              "P": 2457
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4340,
              "P": 2465
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20390,
        "parsed_24_00_numeric_observation_count": 849,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6805,
        "PM2.5": 6805,
        "NO2": 6780
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/TED2_2026.csv?v=1",
      "http_status": 200,
      "sha256": "bcd66116bd98f3849837adbec002191f10380248a98cf41ea9329dfd5a6b4720",
      "byte_count": 917345,
      "retrieved_at_utc": "2026-10-12T17:41:50.187183+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/TED2.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6522,
            "accepted_numeric_observations": 6522,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 273,
            "parsed_24_00_numeric_observations": 273,
            "status_flag_counts": {
              "R": 4084,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6522,
            "accepted_numeric_observations": 6522,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 273,
            "parsed_24_00_numeric_observations": 273,
            "status_flag_counts": {
              "R": 4084,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13044,
        "parsed_24_00_numeric_observation_count": 546,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Black Carbon (880nm)",
        "status",
        "unit",
        "Blue Particulate matter (470nm)",
        "status",
        "unit",
        "Infra Red Particulate matter (950nm)",
        "status",
        "unit",
        "Red Particulate matter (660nm)",
        "status",
        "unit",
        "UV Particulate Matter (UV-BC)",
        "status",
        "unit",
        "UV Particulate Matter (370nm)",
        "status",
        "unit",
        "Yellow Particulate matter (590nm)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6522,
        "PM2.5": 6522
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HIL_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2e70bf074f9a674df9d1be6e1811d321a8637201b3d956c03b3469a8752e5510",
      "byte_count": 879664,
      "retrieved_at_utc": "2026-10-12T17:41:50.203574+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HIL.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6802,
            "accepted_numeric_observations": 6802,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4336,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6749,
            "accepted_numeric_observations": 6749,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4307,
              "P": 2442
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6802,
            "accepted_numeric_observations": 6802,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4336,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20353,
        "parsed_24_00_numeric_observation_count": 850,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6802,
        "PM2.5": 6802,
        "NO2": 6749
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/FARC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "8a6261feadfa3845cb7a6afe6da92cd136429b29d3f8305c41e33211c8cbadfa",
      "byte_count": 426767,
      "retrieved_at_utc": "2026-10-12T17:41:51.637406+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/FARC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13612,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CHAT_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d12ce7c3e4cdcc41fb373c755d904be7c94bebb37a098e8d7d5df3436db6858f",
      "byte_count": 719871,
      "retrieved_at_utc": "2026-10-12T17:41:51.794379+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CHAT.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6512,
            "accepted_numeric_observations": 6512,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 273,
            "parsed_24_00_numeric_observations": 273,
            "status_flag_counts": {
              "R": 4197,
              "P": 2315
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6254,
            "accepted_numeric_observations": 6254,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 262,
            "parsed_24_00_numeric_observations": 262,
            "status_flag_counts": {
              "R": 4279,
              "P": 1975
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6342,
            "accepted_numeric_observations": 6342,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 269,
            "parsed_24_00_numeric_observations": 269,
            "status_flag_counts": {
              "R": 4072,
              "P": 2270
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19108,
        "parsed_24_00_numeric_observation_count": 804,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6512,
        "PM2.5": 6342,
        "NO2": 6254
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MAID_2026.csv?v=1",
      "http_status": 200,
      "sha256": "26955991942527192d0a6c385e98e936529e00b8af3e5500c49feac96344f12c",
      "byte_count": 419087,
      "retrieved_at_utc": "2026-10-12T17:41:51.885789+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MAID.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6524,
            "accepted_numeric_observations": 6524,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "P": 6524
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6524,
            "accepted_numeric_observations": 6524,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "P": 6524
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13048,
        "parsed_24_00_numeric_observation_count": 544,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6524,
        "PM2.5": 6524
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BRT3_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a2f388b2d9463e27a8c884cd43991b2ab45b8a91f7d2dc5fed4815ac1ced3227",
      "byte_count": 868268,
      "retrieved_at_utc": "2026-10-12T17:41:52.050855+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BRT3.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6756,
            "accepted_numeric_observations": 6756,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4313,
              "P": 2443
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6807,
            "accepted_numeric_observations": 6807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20370,
        "parsed_24_00_numeric_observation_count": 849,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6807,
        "PM2.5": 6807,
        "NO2": 6756
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "OX",
      "uka_id": "UKA00258",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/OX_2026.csv?v=1",
      "http_status": 200,
      "sha256": "34ec97a3e7d135307250761dca6b09ff6a0ba67dba855c18deff2cdde5c75698",
      "byte_count": 414482,
      "retrieved_at_utc": "2026-10-12T17:41:52.370768+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/OX.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 5841,
            "accepted_numeric_observations": 5841,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 3380,
              "P": 2461
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 5841,
        "parsed_24_00_numeric_observation_count": 245,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 5841
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/MKCC_2026.csv?v=1",
      "http_status": 200,
      "sha256": "bac7b614ae9d2a3ea8b13539f53d120de455b78bec458651f3c8c6b1e2c85cb8",
      "byte_count": 542158,
      "retrieved_at_utc": "2026-10-12T17:41:52.545804+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/MKCC.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13612,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "EB",
      "uka_id": "UKA00546",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/EB_2026.csv?v=1",
      "http_status": 200,
      "sha256": "de92a8e18cc33458cbbb46f09860cc4cceb2bfb406cc84d803854457ebd325a5",
      "byte_count": 862390,
      "retrieved_at_utc": "2026-10-12T17:41:53.163724+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/EB.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6466,
            "accepted_numeric_observations": 6466,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4297,
              "P": 2169
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20082,
        "parsed_24_00_numeric_observation_count": 838,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6466
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "RRKL",
      "uka_id": "UKA01053",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/RRKL_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a7e9b912c018ce0a887c898994e9ba734fdaae74bfdf61e040f62f85dee0684b",
      "byte_count": 273814,
      "retrieved_at_utc": "2026-10-12T17:41:53.903806+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/RRKL.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6810,
        "parsed_24_00_numeric_observation_count": 284,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6810
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/OX8_2026.csv?v=1",
      "http_status": 200,
      "sha256": "12f491acef15ec883910c78809089643e42296ad04cb2a17af78a140e573a672",
      "byte_count": 865637,
      "retrieved_at_utc": "2026-10-12T17:41:54.679170+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/OX8.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2465
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6607,
            "accepted_numeric_observations": 6607,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 276,
            "parsed_24_00_numeric_observations": 276,
            "status_flag_counts": {
              "R": 4146,
              "P": 2461
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2465
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20219,
        "parsed_24_00_numeric_observation_count": 844,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806,
        "NO2": 6607
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SLOW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d4a85d2e8b74b1561b2ec52ed781b93324937d47e86e816f693808027886340f",
      "byte_count": 428347,
      "retrieved_at_utc": "2026-10-12T17:41:54.743301+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SLOW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4337,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13612,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/REA5_2026.csv?v=1",
      "http_status": 200,
      "sha256": "926bf002bb7b388f099dedbb6bc2174f07e8be1132d7bea09d59a78b23f414b8",
      "byte_count": 604770,
      "retrieved_at_utc": "2026-10-12T17:41:55.035786+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/REA5.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6419,
            "accepted_numeric_observations": 6419,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4159,
              "P": 2260
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6769,
            "accepted_numeric_observations": 6769,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4309,
              "P": 2460
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13188,
        "parsed_24_00_numeric_observation_count": 554,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10"
      ],
      "parsed_observation_counts": {
        "NO2": 6769,
        "PM10": 6419
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/POAR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2ab626505c01da391c769e548507d5635f4ea596d04cf9b8d3fbaddd386c2f6b",
      "byte_count": 760863,
      "retrieved_at_utc": "2026-10-12T17:41:55.592130+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/POAR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6779,
            "accepted_numeric_observations": 6779,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4340,
              "P": 2439
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6673,
            "accepted_numeric_observations": 6673,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4252,
              "P": 2421
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6779,
            "accepted_numeric_observations": 6779,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4340,
              "P": 2439
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20231,
        "parsed_24_00_numeric_observation_count": 845,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6779,
        "PM2.5": 6779,
        "NO2": 6673
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/PMTH_2026.csv?v=1",
      "http_status": 200,
      "sha256": "4d755d7c476b1c737448d2449b0edfab38b0c9fdc00b4e3d4b09bf2408f1f001",
      "byte_count": 829840,
      "retrieved_at_utc": "2026-10-12T17:41:55.814300+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/PMTH.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5740,
            "accepted_numeric_observations": 5740,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 240,
            "parsed_24_00_numeric_observations": 240,
            "status_flag_counts": {
              "R": 3298,
              "P": 2442
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6806,
            "accepted_numeric_observations": 6806,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19352,
        "parsed_24_00_numeric_observation_count": 808,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6806,
        "PM2.5": 6806,
        "NO2": 5740
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/REA1_2026.csv?v=1",
      "http_status": 200,
      "sha256": "8b55379b358487a7274d3cdf9e6da49731cd68db2987b46b24f1f57a9330b789",
      "byte_count": 870905,
      "retrieved_at_utc": "2026-10-12T17:41:56.479632+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/REA1.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6695,
            "accepted_numeric_observations": 6695,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4297,
              "P": 2398
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20315,
        "parsed_24_00_numeric_observation_count": 848,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810,
        "NO2": 6695
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SA33_2026.csv?v=1",
      "http_status": 200,
      "sha256": "44b801cf2f38451d354c23e3570fc1b4a6985ec58f391de8ddebbb33c5da4426",
      "byte_count": 763861,
      "retrieved_at_utc": "2026-10-12T17:41:56.968338+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SA33.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6592,
            "accepted_numeric_observations": 6592,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4237,
              "P": 2355
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6812,
            "accepted_numeric_observations": 6812,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20216,
        "parsed_24_00_numeric_observation_count": 847,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6812,
        "PM2.5": 6812,
        "NO2": 6592
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WOEA_2026.csv?v=1",
      "http_status": 200,
      "sha256": "553e963ad16990ba93aed3d6b32c2f0f078c7bc168cb9923c35776979cb23c89",
      "byte_count": 428951,
      "retrieved_at_utc": "2026-10-12T17:41:57.210162+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WOEA.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6813,
            "accepted_numeric_observations": 6813,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6813,
            "accepted_numeric_observations": 6813,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4342,
              "P": 2471
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13626,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6813,
        "PM2.5": 6813
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/WTHG_2026.csv?v=1",
      "http_status": 200,
      "sha256": "a21696c3c1d87d14315bbd65830f6669e43b8152b671ac09cc1317388088e611",
      "byte_count": 582144,
      "retrieved_at_utc": "2026-10-12T17:41:57.578376+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/WTHG.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6529,
            "accepted_numeric_observations": 6529,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4133,
              "P": 2396
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6561,
            "accepted_numeric_observations": 6561,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 275,
            "parsed_24_00_numeric_observations": 275,
            "status_flag_counts": {
              "R": 4226,
              "P": 2335
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13090,
        "parsed_24_00_numeric_observation_count": 547,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6561,
        "NO2": 6529
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BPLE_2026.csv?v=1",
      "http_status": 200,
      "sha256": "b8d0e609a5458e0bdfc0558e280db8fec204c4681414194d4380b0dfe88756bc",
      "byte_count": 427000,
      "retrieved_at_utc": "2026-10-12T17:41:57.776975+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BPLE.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6805,
            "accepted_numeric_observations": 6805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2467
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13610,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6805,
        "PM2.5": 6805
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BHA4",
      "uka_id": "UKA00660",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BHA4_2026.csv?v=1",
      "http_status": 200,
      "sha256": "179cdc2a3aefd9c8c4fad4dbc020cceb473212c4b4ba857e6a76ecc31012988c",
      "byte_count": 397613,
      "retrieved_at_utc": "2026-10-12T17:41:57.962903+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BHA4.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 5374,
            "accepted_numeric_observations": 5374,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 226,
            "parsed_24_00_numeric_observations": 226,
            "status_flag_counts": {
              "R": 2958,
              "P": 2416
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 5374,
        "parsed_24_00_numeric_observation_count": 226,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 5374
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BRIW",
      "uka_id": "UKA01120",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BRIW_2026.csv?v=1",
      "http_status": 200,
      "sha256": "01077bccb6ab91082b456504e0ee2f8123fc9a6cc869b4b9d9fd08a60b0b9658",
      "byte_count": 237158,
      "retrieved_at_utc": "2026-10-12T17:41:58.396380+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BRIW.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 4989,
            "accepted_numeric_observations": 4989,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 209,
            "parsed_24_00_numeric_observations": 209,
            "status_flag_counts": {
              "P": 2628,
              "R": 2361
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 4989,
        "parsed_24_00_numeric_observation_count": 209,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 4989
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/STOR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "cd670574be8e52c0a470a528aa218474f95382d9444d9ebe4a86ed766705cd06",
      "byte_count": 762810,
      "retrieved_at_utc": "2026-10-12T17:41:58.612524+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/STOR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6712,
            "accepted_numeric_observations": 6712,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4286,
              "P": 2426
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6809,
            "accepted_numeric_observations": 6809,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4339,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20330,
        "parsed_24_00_numeric_observation_count": 848,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6809,
        "PM2.5": 6809,
        "NO2": 6712
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BOBV_2026.csv?v=1",
      "http_status": 200,
      "sha256": "39c5f24007df8a6d9490b1e74084e61f460b058e32449b17144c51daf27bf8cc",
      "byte_count": 278866,
      "retrieved_at_utc": "2026-10-12T17:41:58.690718+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BOBV.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 3075,
            "accepted_numeric_observations": 3075,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 129,
            "parsed_24_00_numeric_observations": 129,
            "status_flag_counts": {
              "P": 2472,
              "R": 603
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 3075,
            "accepted_numeric_observations": 3075,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 129,
            "parsed_24_00_numeric_observations": 129,
            "status_flag_counts": {
              "P": 2472,
              "R": 603
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6150,
        "parsed_24_00_numeric_observation_count": 258,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 3075,
        "PM2.5": 3075
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SOUT_2026.csv?v=1",
      "http_status": 200,
      "sha256": "719209db0e7c3dbf85e6af11de17710628fe8923dd192a9e56bf65ea47d9777b",
      "byte_count": 978012,
      "retrieved_at_utc": "2026-10-12T17:41:58.730278+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SOUT.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6701,
            "accepted_numeric_observations": 6701,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4233,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6734,
            "accepted_numeric_observations": 6734,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4300,
              "P": 2434
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6701,
            "accepted_numeric_observations": 6701,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4233,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20136,
        "parsed_24_00_numeric_observation_count": 842,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Sulphur dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6734,
        "PM10": 6701,
        "PM2.5": 6701
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BRSP_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d51a197a7c934b9d124c58c7fc67ebaa00589f6f3bb989029bbd2cce8889ced4",
      "byte_count": 426567,
      "retrieved_at_utc": "2026-10-12T17:41:59.751922+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BRSP.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6804,
            "accepted_numeric_observations": 6804,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6804,
            "accepted_numeric_observations": 6804,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4338,
              "P": 2466
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13608,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6804,
        "PM2.5": 6804
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BORN_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2cca876c2c5e06cc595783d13db98774d227ddd088f1ca768389ab84f789fff6",
      "byte_count": 688622,
      "retrieved_at_utc": "2026-10-12T17:41:59.947824+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BORN.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6720,
            "accepted_numeric_observations": 6720,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4293,
              "P": 2427
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6440,
            "accepted_numeric_observations": 6440,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 270,
            "parsed_24_00_numeric_observations": 270,
            "status_flag_counts": {
              "R": 4204,
              "P": 2236
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13160,
        "parsed_24_00_numeric_observation_count": 553,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6720,
        "PM2.5": 6440
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CHGR",
      "uka_id": "UKA01101",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CHGR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "2dd68603934df0c177e5c9c55cc8b54228e3865f585b0d12d148c9b13d2dbd46",
      "byte_count": 248048,
      "retrieved_at_utc": "2026-10-12T17:42:00.081966+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CHGR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 6377,
            "accepted_numeric_observations": 6377,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 271,
            "parsed_24_00_numeric_observations": 271,
            "status_flag_counts": {
              "R": 4109,
              "P": 2268
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6377,
        "parsed_24_00_numeric_observation_count": 271,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 6377
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/GLOT_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d1fbf61af70fc684e812eeba5ae91442877ae8d6bb0ae36ee678333bcae1fd4c",
      "byte_count": 427354,
      "retrieved_at_utc": "2026-10-12T17:42:00.915341+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/GLOT.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 13616,
        "parsed_24_00_numeric_observation_count": 568,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/CHBR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "99cccabf363622e5a86460aa4ac542c9df5f3b1ae5b1be80f68fe7d83193014d",
      "byte_count": 580313,
      "retrieved_at_utc": "2026-10-12T17:42:01.519397+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/CHBR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.3"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6780,
            "accepted_numeric_observations": 6780,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4320,
              "P": 2460
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6216,
            "accepted_numeric_observations": 6216,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 264,
            "parsed_24_00_numeric_observations": 264,
            "status_flag_counts": {
              "R": 4047,
              "P": 2169
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 12996,
        "parsed_24_00_numeric_observation_count": 548,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6780,
        "PM2.5": 6216
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "EX",
      "uka_id": "UKA00263",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/EX_2026.csv?v=1",
      "http_status": 200,
      "sha256": "edaeb20af373ab5eef3aba7b8aedbb70b007314da7efe9406db6248387dcce69",
      "byte_count": 561571,
      "retrieved_at_utc": "2026-10-12T17:42:01.533130+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/EX.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6676,
            "accepted_numeric_observations": 6676,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4291,
              "P": 2385
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6676,
        "parsed_24_00_numeric_observation_count": 280,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6676
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BR11_2026.csv?v=1",
      "http_status": 200,
      "sha256": "0d1d5aa6a1f9cc4c35fd3f080f67675cc8158dfccf5426bea528e22d56590f73",
      "byte_count": 757613,
      "retrieved_at_utc": "2026-10-12T17:42:01.768543+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BR11.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.4"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6530,
            "accepted_numeric_observations": 6530,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 274,
            "parsed_24_00_numeric_observations": 274,
            "status_flag_counts": {
              "R": 4132,
              "P": 2398
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6810,
            "accepted_numeric_observations": 6810,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2469
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20150,
        "parsed_24_00_numeric_observation_count": 842,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6810,
        "PM2.5": 6810,
        "NO2": 6530
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/BRS8_2026.csv?v=1",
      "http_status": 200,
      "sha256": "18c5cec379f6b13f89670ce9e7135e5483d8354fddea350616e48a9147741b9a",
      "byte_count": 846161,
      "retrieved_at_utc": "2026-10-12T17:42:01.906951+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/BRS8.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6376,
            "accepted_numeric_observations": 6376,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 267,
            "parsed_24_00_numeric_observations": 267,
            "status_flag_counts": {
              "R": 4196,
              "P": 2180
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6723,
            "accepted_numeric_observations": 6723,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 282,
            "parsed_24_00_numeric_observations": 282,
            "status_flag_counts": {
              "R": 4292,
              "P": 2431
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6389,
            "accepted_numeric_observations": 6389,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 268,
            "parsed_24_00_numeric_observations": 268,
            "status_flag_counts": {
              "R": 4137,
              "P": 2252
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 19488,
        "parsed_24_00_numeric_observation_count": 817,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6723,
        "PM2.5": 6389,
        "PM10": 6376
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "PLYR",
      "uka_id": "UKA00629",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/PLYR_2026.csv?v=1",
      "http_status": 200,
      "sha256": "38efa3a2c97d10cacb0f1f9f06aec16f127dfb0ef6764173623cd6141244c626",
      "byte_count": 449675,
      "retrieved_at_utc": "2026-10-12T17:42:02.259530+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/PLYR.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.1"
          }
        },
        "pollutants": {
          "NO2": {
            "source_numeric_observations": 6740,
            "accepted_numeric_observations": 6740,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 281,
            "parsed_24_00_numeric_observations": 281,
            "status_flag_counts": {
              "R": 4313,
              "P": 2427
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 6740,
        "parsed_24_00_numeric_observation_count": 281,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 6740
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SASH_2026.csv?v=1",
      "http_status": 200,
      "sha256": "48b2dd5319a9affe6af5c543b7950ede6d43e1ab53c5bde5007aeed9d7f42cf3",
      "byte_count": 404799,
      "retrieved_at_utc": "2026-10-12T17:42:03.081591+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SASH.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.1"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6541,
            "accepted_numeric_observations": 6541,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 272,
            "parsed_24_00_numeric_observations": 272,
            "status_flag_counts": {
              "R": 4209,
              "P": 2332
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6366,
            "accepted_numeric_observations": 6366,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 267,
            "parsed_24_00_numeric_observations": 267,
            "status_flag_counts": {
              "R": 4134,
              "P": 2232
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 12907,
        "parsed_24_00_numeric_observation_count": 539,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6541,
        "PM2.5": 6366
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/HONI_2026.csv?v=1",
      "http_status": 200,
      "sha256": "1373e4d9d1b71197e6756b503a8cda4b6c05183d7ba8c80f54a133a9e4db235d",
      "byte_count": 869005,
      "retrieved_at_utc": "2026-10-12T17:42:04.200276+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/HONI.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6760,
            "accepted_numeric_observations": 6760,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 283,
            "parsed_24_00_numeric_observations": 283,
            "status_flag_counts": {
              "R": 4322,
              "P": 2438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6811,
            "accepted_numeric_observations": 6811,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4341,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20382,
        "parsed_24_00_numeric_observation_count": 851,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6811,
        "PM2.5": 6811,
        "NO2": 6760
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/PLYM_2026.csv?v=1",
      "http_status": 200,
      "sha256": "d6c543a7ea5e7cea34f9ebc1d50c04f6f80d7809f61fe8ed55a92f85544688f5",
      "byte_count": 878318,
      "retrieved_at_utc": "2026-10-12T17:42:04.392376+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/PLYM.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6788,
            "accepted_numeric_observations": 6788,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4326,
              "P": 2462
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6808,
            "accepted_numeric_observations": 6808,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 284,
            "parsed_24_00_numeric_observations": 284,
            "status_flag_counts": {
              "R": 4340,
              "P": 2468
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20404,
        "parsed_24_00_numeric_observation_count": 852,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6808,
        "PM2.5": 6808,
        "NO2": 6788
      }
    },
    {
      "stage": "annual_site_data",
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "year": 2026,
      "url": "https://uk-air.defra.gov.uk/datastore/data_files/site_data/SWHO_2026.csv?v=1",
      "http_status": 200,
      "sha256": "09cca83f3c05d1b7436601b7d199b34417f7f2d087b25e0194db25fb7be7e517",
      "byte_count": 863688,
      "retrieved_at_utc": "2026-10-12T17:42:05.955565+00:00",
      "raw_path": "outputs/complete_period_review/raw/2026/SWHO.csv",
      "parser_diagnostics": {
        "schema": "aq26_uk_air_hour_ending_parser_v2",
        "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
        "source_calendar_date_preserved": true,
        "accepted_status_flags": {
          "R": "ratified",
          "P": "provisional",
          "P*": "as_supplied"
        },
        "selected_columns": {
          "PM10": {
            "value": "PM<sub>10</sub> particulate matter (Hourly measured)",
            "status": "status"
          },
          "NO2": {
            "value": "Nitrogen dioxide",
            "status": "status.2"
          },
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status.5"
          }
        },
        "pollutants": {
          "PM10": {
            "source_numeric_observations": 6711,
            "accepted_numeric_observations": 6711,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4241,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6683,
            "accepted_numeric_observations": 6683,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 279,
            "parsed_24_00_numeric_observations": 279,
            "status_flag_counts": {
              "R": 4243,
              "P": 2440
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6711,
            "accepted_numeric_observations": 6711,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 280,
            "parsed_24_00_numeric_observations": 280,
            "status_flag_counts": {
              "R": 4241,
              "P": 2470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 284,
        "parsed_numeric_observation_count": 20105,
        "parsed_24_00_numeric_observation_count": 839,
        "hour_ending_reconciliation_passed": true
      },
      "header_columns": [
        "Date",
        "time",
        "PM<sub>10</sub> particulate matter (Hourly measured)",
        "status",
        "unit",
        "Nitric oxide",
        "status",
        "unit",
        "Nitrogen dioxide",
        "status",
        "unit",
        "Nitrogen oxides as nitrogen dioxide",
        "status",
        "unit",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6711,
        "PM2.5": 6711,
        "NO2": 6683
      }
    }
  ],
  "time_basis_assurance": {
    "schema": "aq26_england_time_basis_assurance_v1",
    "generated_at_utc": "2026-10-12T17:42:08.035468+00:00",
    "status": "pass",
    "time_basis": "GMT hour ending; daily aggregation uses the printed source calendar date",
    "source_calendar_date_preserved": true,
    "hour_ending_24_preserved": true,
    "annual_files_with_parser_diagnostics": 143,
    "source_24_00_rows": 40612,
    "parsed_24_00_pollutant_observations": 88503,
    "source_numeric_observations": 2117978,
    "quality_accepted_observations": 2117978,
    "excluded_unrecognised_status_observations": 0,
    "status_flag_counts": {
      "P": 797308,
      "R": 1320670
    },
    "accepted_status_flags": {
      "R": "ratified",
      "P": "provisional",
      "P*": "as_supplied"
    },
    "errors": []
  },
  "software_provenance": {
    "git_commit": "86c7359149d80e3c8d88d9718633541a03eaf602",
    "github_run_id": "38285300914",
    "workflow": "AQ26 Daily and Weekly Scientific Observatory",
    "parser_schema": "aq26_uk_air_hour_ending_parser_v2",
    "review_schema": "aq26_england_network_review_v3"
  },
  "station_registry_sha256": "42f3774d1ff5019ed3e6e28420d1cb2d4826978cf7193cce32ae4cedb8809249",
  "station_registry_geojson_sha256": "d53be42ba469252efeddbb8f5da089b90999d8ff3ac9168edf11bec7b6e1fbfa",
  "data_dictionary_sha256": "c87ec838b00395c09176a99a4964cdec46c4acf82f6035b8dc70d3816729cbdb"
}