{
  "schema": "aq26_england_network_review_v3",
  "status": "complete_england_network_review",
  "target_area": "England",
  "period_start": "2026-08-12",
  "period_end": "2026-09-10",
  "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": 142,
  "reporting_station_coverage_percent": 99.3,
  "configured_target_stream_count": 330,
  "expected_configured_stream_days": 9872,
  "valid_pollutant_day_observations": 9491,
  "unique_station_days": 4201,
  "valid_station_days": 9491,
  "configured_stream_day_completeness_percent": 96.1,
  "national_publication_ready": true,
  "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": 3796,
      "expected_station_days": 3796,
      "reporting_stations": 126,
      "reporting_regions": 9,
      "valid_pollutant_day_observations": 3665,
      "valid_station_days": 3665,
      "configured_stream_day_completeness_percent": 96.5,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    },
    {
      "pollutant": "PM10",
      "configured_station_streams": 108,
      "configured_regions": 9,
      "expected_pollutant_day_observations": 3226,
      "expected_station_days": 3226,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "valid_pollutant_day_observations": 3108,
      "valid_station_days": 3108,
      "configured_stream_day_completeness_percent": 96.3,
      "all_configured_regions_reporting": true,
      "coverage_status": "reporting"
    },
    {
      "pollutant": "NO2",
      "configured_station_streams": 95,
      "configured_regions": 9,
      "expected_pollutant_day_observations": 2850,
      "expected_station_days": 2850,
      "reporting_stations": 95,
      "reporting_regions": 9,
      "valid_pollutant_day_observations": 2718,
      "valid_station_days": 2718,
      "configured_stream_day_completeness_percent": 95.4,
      "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": 326,
      "valid_station_days": 326,
      "reporting_stations": 12,
      "completeness_percent": 90.6,
      "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": 281,
      "valid_station_days": 281,
      "reporting_stations": 10,
      "completeness_percent": 93.7,
      "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": 218,
      "valid_station_days": 218,
      "reporting_stations": 8,
      "completeness_percent": 90.8,
      "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": 530,
      "valid_station_days": 530,
      "reporting_stations": 18,
      "completeness_percent": 98.1,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 450,
      "expected_station_days": 450,
      "valid_pollutant_day_observations": 444,
      "valid_station_days": 444,
      "reporting_stations": 15,
      "completeness_percent": 98.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "North West",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 480,
      "expected_station_days": 480,
      "valid_pollutant_day_observations": 465,
      "valid_station_days": 465,
      "reporting_stations": 16,
      "completeness_percent": 96.9,
      "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": 539,
      "valid_station_days": 539,
      "reporting_stations": 19,
      "completeness_percent": 94.6,
      "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": 479,
      "valid_station_days": 479,
      "reporting_stations": 17,
      "completeness_percent": 93.9,
      "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": 425,
      "valid_station_days": 425,
      "reporting_stations": 15,
      "completeness_percent": 94.4,
      "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": 376,
      "expected_station_days": 376,
      "valid_pollutant_day_observations": 353,
      "valid_station_days": 353,
      "reporting_stations": 12,
      "completeness_percent": 93.9,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East Midlands",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 316,
      "expected_station_days": 316,
      "valid_pollutant_day_observations": 300,
      "valid_station_days": 300,
      "reporting_stations": 10,
      "completeness_percent": 94.9,
      "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": 254,
      "valid_station_days": 254,
      "reporting_stations": 9,
      "completeness_percent": 94.1,
      "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": 465,
      "valid_station_days": 465,
      "reporting_stations": 16,
      "completeness_percent": 96.9,
      "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": 194,
      "valid_station_days": 194,
      "reporting_stations": 7,
      "completeness_percent": 92.4,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East of England",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 150,
      "expected_station_days": 150,
      "valid_pollutant_day_observations": 148,
      "valid_station_days": 148,
      "reporting_stations": 5,
      "completeness_percent": 98.7,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    },
    {
      "region": "East of England",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 120,
      "expected_station_days": 120,
      "valid_pollutant_day_observations": 113,
      "valid_station_days": 113,
      "reporting_stations": 4,
      "completeness_percent": 94.2,
      "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": 210,
      "valid_station_days": 210,
      "reporting_stations": 7,
      "completeness_percent": 100.0,
      "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": 150,
      "valid_station_days": 150,
      "reporting_stations": 5,
      "completeness_percent": 83.3,
      "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": 531,
      "valid_station_days": 531,
      "reporting_stations": 18,
      "completeness_percent": 98.3,
      "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": 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": "South East",
      "pollutant": "NO2",
      "expected_pollutant_day_observations": 390,
      "expected_station_days": 390,
      "valid_pollutant_day_observations": 369,
      "valid_station_days": 369,
      "reporting_stations": 13,
      "completeness_percent": 94.6,
      "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": 417,
      "valid_station_days": 417,
      "reporting_stations": 14,
      "completeness_percent": 99.3,
      "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": 300,
      "valid_station_days": 300,
      "reporting_stations": 10,
      "completeness_percent": 100.0,
      "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": 289,
      "valid_station_days": 289,
      "reporting_stations": 10,
      "completeness_percent": 96.3,
      "meets_minimum_cell_floor": true,
      "meets_national_stream_threshold": true,
      "coverage_status": "meets_national_threshold"
    }
  ],
  "regional_coverage_exceptions": [
    {
      "region": "London",
      "pollutant": "PM10",
      "expected_pollutant_day_observations": 180,
      "expected_station_days": 180,
      "valid_pollutant_day_observations": 150,
      "valid_station_days": 150,
      "reporting_stations": 5,
      "completeness_percent": 83.3,
      "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": 825,
      "valid_station_days": 825,
      "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": 1439,
      "valid_station_days": 1439,
      "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": 1443,
      "valid_station_days": 1443,
      "coverage_status": "reporting"
    },
    {
      "region": "East Midlands",
      "active_aurn_sites_discovered": 17,
      "configured_target_pollutant_sites": 14,
      "reporting_stations": 13,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 907,
      "valid_station_days": 907,
      "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": 1565,
      "valid_station_days": 1565,
      "coverage_status": "reporting"
    },
    {
      "region": "East of England",
      "active_aurn_sites_discovered": 15,
      "configured_target_pollutant_sites": 8,
      "reporting_stations": 8,
      "pollutants_with_valid_daily_means": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "valid_pollutant_day_observations": 455,
      "valid_station_days": 455,
      "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": 480,
      "valid_station_days": 480,
      "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": 1371,
      "valid_station_days": 1371,
      "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": 1006,
      "valid_station_days": 1006,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.16,
      "period_median_ug_m3": 4.85,
      "period_p95_daily_mean_ug_m3": 7.72,
      "max_daily_mean_ug_m3": 13.2,
      "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": 9.23,
      "period_median_ug_m3": 6.91,
      "period_p95_daily_mean_ug_m3": 21.04,
      "max_daily_mean_ug_m3": 22.58,
      "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": 4.57,
      "period_median_ug_m3": 3.53,
      "period_p95_daily_mean_ug_m3": 10.92,
      "max_daily_mean_ug_m3": 12.29,
      "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": 26,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 26,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 9.46,
      "period_median_ug_m3": 8.74,
      "period_p95_daily_mean_ug_m3": 15.2,
      "max_daily_mean_ug_m3": 15.77,
      "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": 11.08,
      "period_median_ug_m3": 7.36,
      "period_p95_daily_mean_ug_m3": 24.3,
      "max_daily_mean_ug_m3": 42.84,
      "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": 4.94,
      "period_median_ug_m3": 3.81,
      "period_p95_daily_mean_ug_m3": 12.74,
      "max_daily_mean_ug_m3": 13.96,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 17.65,
      "period_median_ug_m3": 17.47,
      "period_p95_daily_mean_ug_m3": 23.88,
      "max_daily_mean_ug_m3": 31.77,
      "days_above_who_reference": 1
    },
    {
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.28,
      "period_median_ug_m3": 4.45,
      "period_p95_daily_mean_ug_m3": 10.16,
      "max_daily_mean_ug_m3": 12.88,
      "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": 9.6,
      "period_median_ug_m3": 7.37,
      "period_p95_daily_mean_ug_m3": 22.22,
      "max_daily_mean_ug_m3": 24.38,
      "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": 4.64,
      "period_median_ug_m3": 3.79,
      "period_p95_daily_mean_ug_m3": 9.53,
      "max_daily_mean_ug_m3": 11.91,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.77,
      "period_median_ug_m3": 12.53,
      "period_p95_daily_mean_ug_m3": 19.63,
      "max_daily_mean_ug_m3": 21.5,
      "days_above_who_reference": 0
    },
    {
      "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": 8.13,
      "period_median_ug_m3": 6.8,
      "period_p95_daily_mean_ug_m3": 14.89,
      "max_daily_mean_ug_m3": 16.97,
      "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": 4.35,
      "period_median_ug_m3": 3.7,
      "period_p95_daily_mean_ug_m3": 8.93,
      "max_daily_mean_ug_m3": 10.64,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 23.73,
      "period_median_ug_m3": 23.74,
      "period_p95_daily_mean_ug_m3": 32.14,
      "max_daily_mean_ug_m3": 47.61,
      "days_above_who_reference": 14
    },
    {
      "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": 12.69,
      "period_median_ug_m3": 11.28,
      "period_p95_daily_mean_ug_m3": 21.96,
      "max_daily_mean_ug_m3": 25.5,
      "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": 5.57,
      "period_median_ug_m3": 5.03,
      "period_p95_daily_mean_ug_m3": 10.52,
      "max_daily_mean_ug_m3": 11.51,
      "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": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 19.89,
      "period_median_ug_m3": 18.49,
      "period_p95_daily_mean_ug_m3": 29.84,
      "max_daily_mean_ug_m3": 31.86,
      "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": 9.05,
      "period_median_ug_m3": 8.14,
      "period_p95_daily_mean_ug_m3": 18.02,
      "max_daily_mean_ug_m3": 21.16,
      "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": 4.7,
      "period_median_ug_m3": 4.25,
      "period_p95_daily_mean_ug_m3": 9.31,
      "max_daily_mean_ug_m3": 11.01,
      "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": 9.81,
      "period_median_ug_m3": 7.59,
      "period_p95_daily_mean_ug_m3": 21.0,
      "max_daily_mean_ug_m3": 26.23,
      "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": 4.92,
      "period_median_ug_m3": 3.69,
      "period_p95_daily_mean_ug_m3": 10.16,
      "max_daily_mean_ug_m3": 12.01,
      "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": 9.88,
      "period_median_ug_m3": 8.02,
      "period_p95_daily_mean_ug_m3": 20.93,
      "max_daily_mean_ug_m3": 22.0,
      "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": 4.68,
      "period_median_ug_m3": 3.67,
      "period_p95_daily_mean_ug_m3": 9.81,
      "max_daily_mean_ug_m3": 12.17,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.04,
      "period_median_ug_m3": 9.78,
      "period_p95_daily_mean_ug_m3": 14.98,
      "max_daily_mean_ug_m3": 16.47,
      "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": 10.9,
      "period_median_ug_m3": 8.87,
      "period_p95_daily_mean_ug_m3": 22.91,
      "max_daily_mean_ug_m3": 23.63,
      "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": 5.44,
      "period_median_ug_m3": 4.44,
      "period_p95_daily_mean_ug_m3": 10.95,
      "max_daily_mean_ug_m3": 13.29,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.76,
      "period_median_ug_m3": 7.78,
      "period_p95_daily_mean_ug_m3": 11.54,
      "max_daily_mean_ug_m3": 12.57,
      "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": 6.74,
      "period_median_ug_m3": 5.85,
      "period_p95_daily_mean_ug_m3": 11.09,
      "max_daily_mean_ug_m3": 13.88,
      "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": 15.17,
      "period_median_ug_m3": 15.18,
      "period_p95_daily_mean_ug_m3": 22.92,
      "max_daily_mean_ug_m3": 27.14,
      "days_above_who_reference": 1
    },
    {
      "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": 11.25,
      "period_median_ug_m3": 9.61,
      "period_p95_daily_mean_ug_m3": 21.43,
      "max_daily_mean_ug_m3": 23.49,
      "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": 5.17,
      "period_median_ug_m3": 4.46,
      "period_p95_daily_mean_ug_m3": 10.37,
      "max_daily_mean_ug_m3": 12.06,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 17.45,
      "period_median_ug_m3": 17.3,
      "period_p95_daily_mean_ug_m3": 25.9,
      "max_daily_mean_ug_m3": 32.62,
      "days_above_who_reference": 2
    },
    {
      "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": 10.32,
      "period_median_ug_m3": 9.13,
      "period_p95_daily_mean_ug_m3": 18.18,
      "max_daily_mean_ug_m3": 21.96,
      "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": 4.7,
      "period_median_ug_m3": 3.77,
      "period_p95_daily_mean_ug_m3": 8.64,
      "max_daily_mean_ug_m3": 12.34,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "station_name": "Luton A505 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": 22.53,
      "period_median_ug_m3": 25.28,
      "period_p95_daily_mean_ug_m3": 35.94,
      "max_daily_mean_ug_m3": 38.39,
      "days_above_who_reference": 14
    },
    {
      "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": 5.14,
      "period_median_ug_m3": 4.33,
      "period_p95_daily_mean_ug_m3": 9.91,
      "max_daily_mean_ug_m3": 13.3,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.17,
      "period_median_ug_m3": 6.75,
      "period_p95_daily_mean_ug_m3": 12.5,
      "max_daily_mean_ug_m3": 15.5,
      "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": 9.07,
      "period_median_ug_m3": 7.5,
      "period_p95_daily_mean_ug_m3": 17.1,
      "max_daily_mean_ug_m3": 20.03,
      "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": 4.72,
      "period_median_ug_m3": 3.68,
      "period_p95_daily_mean_ug_m3": 9.06,
      "max_daily_mean_ug_m3": 12.15,
      "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": "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": 10.23,
      "period_median_ug_m3": 8.65,
      "period_p95_daily_mean_ug_m3": 19.32,
      "max_daily_mean_ug_m3": 28.16,
      "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": 4.78,
      "period_median_ug_m3": 4.04,
      "period_p95_daily_mean_ug_m3": 9.65,
      "max_daily_mean_ug_m3": 10.62,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.83,
      "period_median_ug_m3": 8.44,
      "period_p95_daily_mean_ug_m3": 25.24,
      "max_daily_mean_ug_m3": 28.28,
      "days_above_who_reference": 2
    },
    {
      "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": 11.57,
      "period_median_ug_m3": 9.75,
      "period_p95_daily_mean_ug_m3": 21.51,
      "max_daily_mean_ug_m3": 30.87,
      "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": 5.5,
      "period_median_ug_m3": 4.22,
      "period_p95_daily_mean_ug_m3": 11.46,
      "max_daily_mean_ug_m3": 15.46,
      "days_above_who_reference": 1
    },
    {
      "region": "East of England",
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "station_name": "Southend Shoeburyness",
      "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": 9.67,
      "period_median_ug_m3": 8.56,
      "period_p95_daily_mean_ug_m3": 17.83,
      "max_daily_mean_ug_m3": 24.39,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "station_name": "Southend Shoeburyness",
      "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": 4.93,
      "period_median_ug_m3": 4.17,
      "period_p95_daily_mean_ug_m3": 10.01,
      "max_daily_mean_ug_m3": 13.48,
      "days_above_who_reference": 0
    },
    {
      "region": "East of England",
      "station_code": "STGW",
      "uka_id": "UKA01156",
      "station_name": "Stevenage St Georges Way South",
      "environment_type": "Urban Traffic",
      "pollutant": "PM2.5",
      "valid_days": 16,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 16,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.4,
      "period_median_ug_m3": 5.4,
      "period_p95_daily_mean_ug_m3": 7.92,
      "max_daily_mean_ug_m3": 11.27,
      "days_above_who_reference": 0
    },
    {
      "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": 16.06,
      "period_median_ug_m3": 14.22,
      "period_p95_daily_mean_ug_m3": 30.47,
      "max_daily_mean_ug_m3": 43.35,
      "days_above_who_reference": 2
    },
    {
      "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": 12.55,
      "period_median_ug_m3": 11.16,
      "period_p95_daily_mean_ug_m3": 23.87,
      "max_daily_mean_ug_m3": 26.46,
      "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": 5.06,
      "period_median_ug_m3": 3.99,
      "period_p95_daily_mean_ug_m3": 9.31,
      "max_daily_mean_ug_m3": 12.21,
      "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": 20.03,
      "period_median_ug_m3": 19.37,
      "period_p95_daily_mean_ug_m3": 39.04,
      "max_daily_mean_ug_m3": 45.96,
      "days_above_who_reference": 6
    },
    {
      "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": 14.62,
      "period_median_ug_m3": 13.02,
      "period_p95_daily_mean_ug_m3": 23.68,
      "max_daily_mean_ug_m3": 32.92,
      "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": 5.09,
      "period_median_ug_m3": 4.68,
      "period_p95_daily_mean_ug_m3": 8.98,
      "max_daily_mean_ug_m3": 12.43,
      "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": 11.82,
      "period_median_ug_m3": 10.32,
      "period_p95_daily_mean_ug_m3": 24.43,
      "max_daily_mean_ug_m3": 31.58,
      "days_above_who_reference": 2
    },
    {
      "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": 5.06,
      "period_median_ug_m3": 4.31,
      "period_p95_daily_mean_ug_m3": 8.71,
      "max_daily_mean_ug_m3": 13.7,
      "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": 17.61,
      "period_median_ug_m3": 16.76,
      "period_p95_daily_mean_ug_m3": 31.24,
      "max_daily_mean_ug_m3": 40.11,
      "days_above_who_reference": 6
    },
    {
      "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": 10.21,
      "period_median_ug_m3": 9.09,
      "period_p95_daily_mean_ug_m3": 19.49,
      "max_daily_mean_ug_m3": 23.71,
      "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": 4.24,
      "period_median_ug_m3": 3.37,
      "period_p95_daily_mean_ug_m3": 8.06,
      "max_daily_mean_ug_m3": 11.74,
      "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": 5.72,
      "period_median_ug_m3": 4.94,
      "period_p95_daily_mean_ug_m3": 10.23,
      "max_daily_mean_ug_m3": 13.79,
      "days_above_who_reference": 0
    },
    {
      "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": 10.16,
      "period_median_ug_m3": 8.43,
      "period_p95_daily_mean_ug_m3": 20.35,
      "max_daily_mean_ug_m3": 23.64,
      "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": 4.98,
      "period_median_ug_m3": 3.61,
      "period_p95_daily_mean_ug_m3": 9.11,
      "max_daily_mean_ug_m3": 15.72,
      "days_above_who_reference": 1
    },
    {
      "region": "London",
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "station_name": "London Teddington Bushy 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": 10.72,
      "period_median_ug_m3": 9.44,
      "period_p95_daily_mean_ug_m3": 20.8,
      "max_daily_mean_ug_m3": 23.33,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.59,
      "period_median_ug_m3": 3.51,
      "period_p95_daily_mean_ug_m3": 8.91,
      "max_daily_mean_ug_m3": 13.56,
      "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": 8.7,
      "period_median_ug_m3": 6.64,
      "period_p95_daily_mean_ug_m3": 20.83,
      "max_daily_mean_ug_m3": 25.33,
      "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": 4.48,
      "period_median_ug_m3": 3.28,
      "period_p95_daily_mean_ug_m3": 9.63,
      "max_daily_mean_ug_m3": 11.65,
      "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": 9.03,
      "period_median_ug_m3": 6.92,
      "period_p95_daily_mean_ug_m3": 20.22,
      "max_daily_mean_ug_m3": 25.36,
      "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": 4.89,
      "period_median_ug_m3": 3.53,
      "period_p95_daily_mean_ug_m3": 10.38,
      "max_daily_mean_ug_m3": 15.04,
      "days_above_who_reference": 1
    },
    {
      "region": "North East",
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "station_name": "Stockton-on-Tees Eaglescliffe",
      "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": 6.71,
      "period_median_ug_m3": 6.14,
      "period_p95_daily_mean_ug_m3": 12.85,
      "max_daily_mean_ug_m3": 17.03,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 10.13,
      "period_median_ug_m3": 8.21,
      "period_p95_daily_mean_ug_m3": 21.63,
      "max_daily_mean_ug_m3": 29.23,
      "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": "PM2.5",
      "valid_days": 17,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 17,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.72,
      "period_median_ug_m3": 5.46,
      "period_p95_daily_mean_ug_m3": 8.48,
      "max_daily_mean_ug_m3": 9.21,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.3,
      "period_median_ug_m3": 5.72,
      "period_p95_daily_mean_ug_m3": 9.99,
      "max_daily_mean_ug_m3": 12.45,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.91,
      "period_median_ug_m3": 10.5,
      "period_p95_daily_mean_ug_m3": 28.46,
      "max_daily_mean_ug_m3": 29.08,
      "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": 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": 4.69,
      "period_p95_daily_mean_ug_m3": 12.32,
      "max_daily_mean_ug_m3": 13.19,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.13,
      "period_median_ug_m3": 7.48,
      "period_p95_daily_mean_ug_m3": 12.69,
      "max_daily_mean_ug_m3": 21.83,
      "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": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 11.59,
      "period_median_ug_m3": 10.51,
      "period_p95_daily_mean_ug_m3": 22.67,
      "max_daily_mean_ug_m3": 28.14,
      "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": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 4.08,
      "period_median_ug_m3": 2.96,
      "period_p95_daily_mean_ug_m3": 9.44,
      "max_daily_mean_ug_m3": 10.75,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 21.73,
      "period_median_ug_m3": 21.14,
      "period_p95_daily_mean_ug_m3": 34.44,
      "max_daily_mean_ug_m3": 36.13,
      "days_above_who_reference": 8
    },
    {
      "region": "North East",
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "station_name": "Newcastle Cradlewell 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": 8.01,
      "period_median_ug_m3": 7.31,
      "period_p95_daily_mean_ug_m3": 15.41,
      "max_daily_mean_ug_m3": 19.59,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.19,
      "period_median_ug_m3": 3.53,
      "period_p95_daily_mean_ug_m3": 8.47,
      "max_daily_mean_ug_m3": 11.17,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.93,
      "period_median_ug_m3": 10.57,
      "period_p95_daily_mean_ug_m3": 16.99,
      "max_daily_mean_ug_m3": 17.7,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 10.29,
      "period_median_ug_m3": 9.46,
      "period_p95_daily_mean_ug_m3": 20.43,
      "max_daily_mean_ug_m3": 24.26,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 6.69,
      "period_median_ug_m3": 6.04,
      "period_p95_daily_mean_ug_m3": 10.94,
      "max_daily_mean_ug_m3": 11.75,
      "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": 8.61,
      "period_median_ug_m3": 6.49,
      "period_p95_daily_mean_ug_m3": 20.03,
      "max_daily_mean_ug_m3": 24.5,
      "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": 4.61,
      "period_median_ug_m3": 3.24,
      "period_p95_daily_mean_ug_m3": 9.59,
      "max_daily_mean_ug_m3": 11.48,
      "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": 11.36,
      "period_median_ug_m3": 8.28,
      "period_p95_daily_mean_ug_m3": 22.26,
      "max_daily_mean_ug_m3": 31.07,
      "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": 5.44,
      "period_median_ug_m3": 3.99,
      "period_p95_daily_mean_ug_m3": 11.97,
      "max_daily_mean_ug_m3": 13.93,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.65,
      "period_median_ug_m3": 7.97,
      "period_p95_daily_mean_ug_m3": 19.95,
      "max_daily_mean_ug_m3": 28.9,
      "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": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 6.13,
      "period_median_ug_m3": 5.46,
      "period_p95_daily_mean_ug_m3": 10.89,
      "max_daily_mean_ug_m3": 12.38,
      "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": 18,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 18,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 8.2,
      "period_median_ug_m3": 8.01,
      "period_p95_daily_mean_ug_m3": 11.24,
      "max_daily_mean_ug_m3": 15.12,
      "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": 9.97,
      "period_median_ug_m3": 7.8,
      "period_p95_daily_mean_ug_m3": 24.06,
      "max_daily_mean_ug_m3": 28.35,
      "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": 5.04,
      "period_median_ug_m3": 3.61,
      "period_p95_daily_mean_ug_m3": 10.61,
      "max_daily_mean_ug_m3": 12.67,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.28,
      "period_median_ug_m3": 7.79,
      "period_p95_daily_mean_ug_m3": 15.63,
      "max_daily_mean_ug_m3": 23.36,
      "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": 4.55,
      "period_median_ug_m3": 3.32,
      "period_p95_daily_mean_ug_m3": 9.28,
      "max_daily_mean_ug_m3": 11.32,
      "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": 9.23,
      "period_median_ug_m3": 7.49,
      "period_p95_daily_mean_ug_m3": 18.57,
      "max_daily_mean_ug_m3": 27.16,
      "days_above_who_reference": 1
    },
    {
      "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": 5.51,
      "period_median_ug_m3": 4.52,
      "period_p95_daily_mean_ug_m3": 12.73,
      "max_daily_mean_ug_m3": 13.65,
      "days_above_who_reference": 0
    },
    {
      "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": 9.76,
      "period_median_ug_m3": 8.34,
      "period_p95_daily_mean_ug_m3": 18.87,
      "max_daily_mean_ug_m3": 20.35,
      "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": 5.37,
      "period_median_ug_m3": 4.24,
      "period_p95_daily_mean_ug_m3": 11.83,
      "max_daily_mean_ug_m3": 13.31,
      "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": 12.78,
      "period_median_ug_m3": 12.42,
      "period_p95_daily_mean_ug_m3": 18.87,
      "max_daily_mean_ug_m3": 20.13,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "station_name": "Blackpool Marton",
      "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": 5.15,
      "period_median_ug_m3": 4.84,
      "period_p95_daily_mean_ug_m3": 10.2,
      "max_daily_mean_ug_m3": 10.72,
      "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": 11.41,
      "period_median_ug_m3": 10.31,
      "period_p95_daily_mean_ug_m3": 22.69,
      "max_daily_mean_ug_m3": 31.72,
      "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": 6.27,
      "period_median_ug_m3": 4.93,
      "period_p95_daily_mean_ug_m3": 14.43,
      "max_daily_mean_ug_m3": 17.98,
      "days_above_who_reference": 2
    },
    {
      "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": 6.78,
      "period_median_ug_m3": 5.62,
      "period_p95_daily_mean_ug_m3": 14.68,
      "max_daily_mean_ug_m3": 18.05,
      "days_above_who_reference": 2
    },
    {
      "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": 11.85,
      "period_median_ug_m3": 11.83,
      "period_p95_daily_mean_ug_m3": 17.67,
      "max_daily_mean_ug_m3": 21.51,
      "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": 11.67,
      "period_median_ug_m3": 11.2,
      "period_p95_daily_mean_ug_m3": 20.96,
      "max_daily_mean_ug_m3": 23.93,
      "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": 6.2,
      "period_median_ug_m3": 5.51,
      "period_p95_daily_mean_ug_m3": 11.49,
      "max_daily_mean_ug_m3": 13.1,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.79,
      "period_median_ug_m3": 8.55,
      "period_p95_daily_mean_ug_m3": 21.15,
      "max_daily_mean_ug_m3": 24.52,
      "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": 8.12,
      "period_median_ug_m3": 7.48,
      "period_p95_daily_mean_ug_m3": 13.69,
      "max_daily_mean_ug_m3": 14.54,
      "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": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.77,
      "period_median_ug_m3": 6.25,
      "period_p95_daily_mean_ug_m3": 11.15,
      "max_daily_mean_ug_m3": 14.43,
      "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": 9.33,
      "period_median_ug_m3": 7.67,
      "period_p95_daily_mean_ug_m3": 18.49,
      "max_daily_mean_ug_m3": 20.88,
      "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": 4.78,
      "period_median_ug_m3": 3.84,
      "period_p95_daily_mean_ug_m3": 10.4,
      "max_daily_mean_ug_m3": 11.84,
      "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": 16.08,
      "period_median_ug_m3": 16.67,
      "period_p95_daily_mean_ug_m3": 23.56,
      "max_daily_mean_ug_m3": 24.83,
      "days_above_who_reference": 0
    },
    {
      "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": 13.57,
      "period_median_ug_m3": 14.03,
      "period_p95_daily_mean_ug_m3": 20.62,
      "max_daily_mean_ug_m3": 26.23,
      "days_above_who_reference": 1
    },
    {
      "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": 11.83,
      "period_median_ug_m3": 10.39,
      "period_p95_daily_mean_ug_m3": 23.35,
      "max_daily_mean_ug_m3": 26.33,
      "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": 5.76,
      "period_median_ug_m3": 4.76,
      "period_p95_daily_mean_ug_m3": 12.17,
      "max_daily_mean_ug_m3": 13.57,
      "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": 10.0,
      "period_median_ug_m3": 9.19,
      "period_p95_daily_mean_ug_m3": 18.07,
      "max_daily_mean_ug_m3": 23.7,
      "days_above_who_reference": 0
    },
    {
      "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": 12.74,
      "period_median_ug_m3": 11.2,
      "period_p95_daily_mean_ug_m3": 23.22,
      "max_daily_mean_ug_m3": 25.4,
      "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": 6.74,
      "period_median_ug_m3": 6.12,
      "period_p95_daily_mean_ug_m3": 12.67,
      "max_daily_mean_ug_m3": 13.83,
      "days_above_who_reference": 0
    },
    {
      "region": "North West",
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "station_name": "Liverpool Thirlmere 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": 10.39,
      "period_median_ug_m3": 8.53,
      "period_p95_daily_mean_ug_m3": 24.16,
      "max_daily_mean_ug_m3": 30.55,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.49,
      "period_median_ug_m3": 4.22,
      "period_p95_daily_mean_ug_m3": 12.99,
      "max_daily_mean_ug_m3": 13.18,
      "days_above_who_reference": 0
    },
    {
      "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": 9.58,
      "period_median_ug_m3": 9.21,
      "period_p95_daily_mean_ug_m3": 13.6,
      "max_daily_mean_ug_m3": 14.23,
      "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": 9.89,
      "period_median_ug_m3": 8.48,
      "period_p95_daily_mean_ug_m3": 18.44,
      "max_daily_mean_ug_m3": 20.33,
      "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": 4.86,
      "period_median_ug_m3": 3.79,
      "period_p95_daily_mean_ug_m3": 10.47,
      "max_daily_mean_ug_m3": 12.07,
      "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": 16.56,
      "period_median_ug_m3": 16.35,
      "period_p95_daily_mean_ug_m3": 27.37,
      "max_daily_mean_ug_m3": 30.39,
      "days_above_who_reference": 3
    },
    {
      "region": "North West",
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "station_name": "Manchester Piccadilly",
      "environment_type": "Urban Background",
      "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": 14.8,
      "period_median_ug_m3": 13.07,
      "period_p95_daily_mean_ug_m3": 25.87,
      "max_daily_mean_ug_m3": 30.19,
      "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": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.39,
      "period_median_ug_m3": 6.08,
      "period_p95_daily_mean_ug_m3": 14.28,
      "max_daily_mean_ug_m3": 15.44,
      "days_above_who_reference": 2
    },
    {
      "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": 5.36,
      "period_median_ug_m3": 4.19,
      "period_p95_daily_mean_ug_m3": 11.4,
      "max_daily_mean_ug_m3": 13.17,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.07,
      "period_median_ug_m3": 9.92,
      "period_p95_daily_mean_ug_m3": 13.75,
      "max_daily_mean_ug_m3": 14.92,
      "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": 10.4,
      "period_median_ug_m3": 9.4,
      "period_p95_daily_mean_ug_m3": 18.97,
      "max_daily_mean_ug_m3": 22.42,
      "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": 5.56,
      "period_median_ug_m3": 4.74,
      "period_p95_daily_mean_ug_m3": 11.36,
      "max_daily_mean_ug_m3": 13.86,
      "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": 10.22,
      "period_median_ug_m3": 8.45,
      "period_p95_daily_mean_ug_m3": 20.4,
      "max_daily_mean_ug_m3": 22.15,
      "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": 5.64,
      "period_median_ug_m3": 4.52,
      "period_p95_daily_mean_ug_m3": 13.37,
      "max_daily_mean_ug_m3": 14.03,
      "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": 22,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 22,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 18.65,
      "period_median_ug_m3": 18.7,
      "period_p95_daily_mean_ug_m3": 25.81,
      "max_daily_mean_ug_m3": 28.11,
      "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": 13.54,
      "period_median_ug_m3": 12.68,
      "period_p95_daily_mean_ug_m3": 24.07,
      "max_daily_mean_ug_m3": 25.81,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.83,
      "period_median_ug_m3": 5.12,
      "period_p95_daily_mean_ug_m3": 11.74,
      "max_daily_mean_ug_m3": 12.79,
      "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": 6.54,
      "period_median_ug_m3": 5.53,
      "period_p95_daily_mean_ug_m3": 14.92,
      "max_daily_mean_ug_m3": 17.18,
      "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": 9.54,
      "period_median_ug_m3": 7.99,
      "period_p95_daily_mean_ug_m3": 22.63,
      "max_daily_mean_ug_m3": 29.49,
      "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": 5.19,
      "period_median_ug_m3": 4.11,
      "period_p95_daily_mean_ug_m3": 12.91,
      "max_daily_mean_ug_m3": 15.39,
      "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": "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": 3.78,
      "period_p95_daily_mean_ug_m3": 10.26,
      "max_daily_mean_ug_m3": 12.48,
      "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": 9.31,
      "period_median_ug_m3": 8.44,
      "period_p95_daily_mean_ug_m3": 14.86,
      "max_daily_mean_ug_m3": 16.67,
      "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": 12.07,
      "period_median_ug_m3": 10.63,
      "period_p95_daily_mean_ug_m3": 23.34,
      "max_daily_mean_ug_m3": 24.26,
      "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": 6.16,
      "period_median_ug_m3": 4.85,
      "period_p95_daily_mean_ug_m3": 13.48,
      "max_daily_mean_ug_m3": 15.12,
      "days_above_who_reference": 2
    },
    {
      "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": 18.79,
      "period_median_ug_m3": 18.14,
      "period_p95_daily_mean_ug_m3": 28.64,
      "max_daily_mean_ug_m3": 35.25,
      "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": 3.52,
      "period_p95_daily_mean_ug_m3": 8.26,
      "max_daily_mean_ug_m3": 10.14,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.62,
      "period_median_ug_m3": 7.3,
      "period_p95_daily_mean_ug_m3": 14.17,
      "max_daily_mean_ug_m3": 21.99,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.05,
      "period_median_ug_m3": 9.4,
      "period_p95_daily_mean_ug_m3": 25.71,
      "max_daily_mean_ug_m3": 31.01,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.3,
      "period_median_ug_m3": 4.55,
      "period_p95_daily_mean_ug_m3": 10.23,
      "max_daily_mean_ug_m3": 11.75,
      "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": 24,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 24,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 17.4,
      "period_median_ug_m3": 17.69,
      "period_p95_daily_mean_ug_m3": 26.86,
      "max_daily_mean_ug_m3": 29.11,
      "days_above_who_reference": 3
    },
    {
      "region": "South East",
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "station_name": "Chatham Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "PM10",
      "valid_days": 24,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 24,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 15.58,
      "period_median_ug_m3": 14.17,
      "period_p95_daily_mean_ug_m3": 24.46,
      "max_daily_mean_ug_m3": 26.05,
      "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": 24,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 24,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.91,
      "period_median_ug_m3": 4.39,
      "period_p95_daily_mean_ug_m3": 12.92,
      "max_daily_mean_ug_m3": 18.08,
      "days_above_who_reference": 1
    },
    {
      "region": "South East",
      "station_code": "EB",
      "uka_id": "UKA00546",
      "station_name": "Eastbourne",
      "environment_type": "Urban Background",
      "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": 5.31,
      "period_median_ug_m3": 4.39,
      "period_p95_daily_mean_ug_m3": 9.23,
      "max_daily_mean_ug_m3": 19.18,
      "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": 9.92,
      "period_median_ug_m3": 9.34,
      "period_p95_daily_mean_ug_m3": 15.81,
      "max_daily_mean_ug_m3": 19.45,
      "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": 4.88,
      "period_median_ug_m3": 4.16,
      "period_p95_daily_mean_ug_m3": 9.12,
      "max_daily_mean_ug_m3": 10.22,
      "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": 9.97,
      "period_median_ug_m3": 8.03,
      "period_p95_daily_mean_ug_m3": 19.26,
      "max_daily_mean_ug_m3": 20.6,
      "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": 5.01,
      "period_median_ug_m3": 3.81,
      "period_p95_daily_mean_ug_m3": 10.6,
      "max_daily_mean_ug_m3": 14.77,
      "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": 17.7,
      "period_median_ug_m3": 16.24,
      "period_p95_daily_mean_ug_m3": 32.09,
      "max_daily_mean_ug_m3": 43.13,
      "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": 7.93,
      "period_median_ug_m3": 6.78,
      "period_p95_daily_mean_ug_m3": 13.69,
      "max_daily_mean_ug_m3": 16.61,
      "days_above_who_reference": 1
    },
    {
      "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": 10.45,
      "period_median_ug_m3": 8.94,
      "period_p95_daily_mean_ug_m3": 20.5,
      "max_daily_mean_ug_m3": 20.95,
      "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": 4.8,
      "period_median_ug_m3": 3.62,
      "period_p95_daily_mean_ug_m3": 9.77,
      "max_daily_mean_ug_m3": 15.02,
      "days_above_who_reference": 1
    },
    {
      "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": 13.41,
      "period_median_ug_m3": 11.93,
      "period_p95_daily_mean_ug_m3": 25.9,
      "max_daily_mean_ug_m3": 29.64,
      "days_above_who_reference": 2
    },
    {
      "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": 8.93,
      "period_median_ug_m3": 7.28,
      "period_p95_daily_mean_ug_m3": 20.0,
      "max_daily_mean_ug_m3": 22.89,
      "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": 8.51,
      "period_median_ug_m3": 7.22,
      "period_p95_daily_mean_ug_m3": 16.24,
      "max_daily_mean_ug_m3": 18.86,
      "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": 3.88,
      "period_median_ug_m3": 3.2,
      "period_p95_daily_mean_ug_m3": 7.31,
      "max_daily_mean_ug_m3": 8.27,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.33,
      "period_median_ug_m3": 8.84,
      "period_p95_daily_mean_ug_m3": 16.18,
      "max_daily_mean_ug_m3": 21.46,
      "days_above_who_reference": 0
    },
    {
      "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": 10.63,
      "period_median_ug_m3": 9.58,
      "period_p95_daily_mean_ug_m3": 18.2,
      "max_daily_mean_ug_m3": 19.42,
      "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": 4.6,
      "period_median_ug_m3": 4.17,
      "period_p95_daily_mean_ug_m3": 7.52,
      "max_daily_mean_ug_m3": 9.53,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.39,
      "period_median_ug_m3": 12.63,
      "period_p95_daily_mean_ug_m3": 22.88,
      "max_daily_mean_ug_m3": 24.21,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "station_name": "Portsmouth Anglesea Road",
      "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": 10.6,
      "period_median_ug_m3": 9.6,
      "period_p95_daily_mean_ug_m3": 18.09,
      "max_daily_mean_ug_m3": 22.41,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.89,
      "period_median_ug_m3": 4.5,
      "period_p95_daily_mean_ug_m3": 8.71,
      "max_daily_mean_ug_m3": 10.89,
      "days_above_who_reference": 0
    },
    {
      "region": "South East",
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "station_name": "Reading New Town",
      "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": 7.3,
      "period_median_ug_m3": 6.84,
      "period_p95_daily_mean_ug_m3": 12.97,
      "max_daily_mean_ug_m3": 17.1,
      "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": 9.69,
      "period_median_ug_m3": 9.12,
      "period_p95_daily_mean_ug_m3": 17.2,
      "max_daily_mean_ug_m3": 18.27,
      "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": 4.44,
      "period_median_ug_m3": 3.59,
      "period_p95_daily_mean_ug_m3": 8.84,
      "max_daily_mean_ug_m3": 9.86,
      "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": 13.69,
      "period_median_ug_m3": 13.21,
      "period_p95_daily_mean_ug_m3": 23.23,
      "max_daily_mean_ug_m3": 26.02,
      "days_above_who_reference": 1
    },
    {
      "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": 15.55,
      "period_median_ug_m3": 13.63,
      "period_p95_daily_mean_ug_m3": 25.9,
      "max_daily_mean_ug_m3": 29.35,
      "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": 4.5,
      "period_median_ug_m3": 3.86,
      "period_p95_daily_mean_ug_m3": 9.12,
      "max_daily_mean_ug_m3": 10.04,
      "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": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 22.48,
      "period_median_ug_m3": 20.15,
      "period_p95_daily_mean_ug_m3": 50.99,
      "max_daily_mean_ug_m3": 56.41,
      "days_above_who_reference": 7
    },
    {
      "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": 11.47,
      "period_median_ug_m3": 10.61,
      "period_p95_daily_mean_ug_m3": 20.38,
      "max_daily_mean_ug_m3": 25.9,
      "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": 4.93,
      "period_median_ug_m3": 4.38,
      "period_p95_daily_mean_ug_m3": 8.11,
      "max_daily_mean_ug_m3": 12.19,
      "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": 11.95,
      "period_median_ug_m3": 10.71,
      "period_p95_daily_mean_ug_m3": 23.06,
      "max_daily_mean_ug_m3": 26.2,
      "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": 4.89,
      "period_median_ug_m3": 4.48,
      "period_p95_daily_mean_ug_m3": 8.86,
      "max_daily_mean_ug_m3": 11.64,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 16.25,
      "period_median_ug_m3": 15.41,
      "period_p95_daily_mean_ug_m3": 28.14,
      "max_daily_mean_ug_m3": 40.01,
      "days_above_who_reference": 2
    },
    {
      "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": 11.58,
      "period_median_ug_m3": 10.06,
      "period_p95_daily_mean_ug_m3": 20.82,
      "max_daily_mean_ug_m3": 23.79,
      "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": 5.42,
      "period_median_ug_m3": 4.86,
      "period_p95_daily_mean_ug_m3": 8.89,
      "max_daily_mean_ug_m3": 13.68,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 12.75,
      "period_median_ug_m3": 12.64,
      "period_p95_daily_mean_ug_m3": 21.37,
      "max_daily_mean_ug_m3": 22.55,
      "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": 11.2,
      "period_median_ug_m3": 9.81,
      "period_p95_daily_mean_ug_m3": 19.66,
      "max_daily_mean_ug_m3": 25.67,
      "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": 5.0,
      "period_median_ug_m3": 4.34,
      "period_p95_daily_mean_ug_m3": 9.03,
      "max_daily_mean_ug_m3": 13.21,
      "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": 11.58,
      "period_median_ug_m3": 10.2,
      "period_p95_daily_mean_ug_m3": 21.31,
      "max_daily_mean_ug_m3": 24.3,
      "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": 5.4,
      "period_median_ug_m3": 4.77,
      "period_p95_daily_mean_ug_m3": 10.55,
      "max_daily_mean_ug_m3": 11.69,
      "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": 16.49,
      "period_median_ug_m3": 16.82,
      "period_p95_daily_mean_ug_m3": 26.11,
      "max_daily_mean_ug_m3": 29.1,
      "days_above_who_reference": 2
    },
    {
      "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": 6.32,
      "period_median_ug_m3": 6.29,
      "period_p95_daily_mean_ug_m3": 9.57,
      "max_daily_mean_ug_m3": 10.64,
      "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": 16.32,
      "period_median_ug_m3": 15.17,
      "period_p95_daily_mean_ug_m3": 25.5,
      "max_daily_mean_ug_m3": 27.39,
      "days_above_who_reference": 2
    },
    {
      "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": 11.68,
      "period_median_ug_m3": 10.44,
      "period_p95_daily_mean_ug_m3": 20.84,
      "max_daily_mean_ug_m3": 25.99,
      "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": 5.08,
      "period_median_ug_m3": 4.56,
      "period_p95_daily_mean_ug_m3": 8.01,
      "max_daily_mean_ug_m3": 8.47,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 6.48,
      "period_median_ug_m3": 5.86,
      "period_p95_daily_mean_ug_m3": 10.27,
      "max_daily_mean_ug_m3": 17.27,
      "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": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.23,
      "period_median_ug_m3": 4.83,
      "period_p95_daily_mean_ug_m3": 8.74,
      "max_daily_mean_ug_m3": 10.8,
      "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": 9.71,
      "period_median_ug_m3": 9.48,
      "period_p95_daily_mean_ug_m3": 14.45,
      "max_daily_mean_ug_m3": 17.78,
      "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": 4.25,
      "period_median_ug_m3": 3.93,
      "period_p95_daily_mean_ug_m3": 6.79,
      "max_daily_mean_ug_m3": 8.13,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 17.79,
      "period_median_ug_m3": 16.67,
      "period_p95_daily_mean_ug_m3": 32.59,
      "max_daily_mean_ug_m3": 38.96,
      "days_above_who_reference": 6
    },
    {
      "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": 11.43,
      "period_median_ug_m3": 10.15,
      "period_p95_daily_mean_ug_m3": 20.32,
      "max_daily_mean_ug_m3": 21.58,
      "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": 5.31,
      "period_median_ug_m3": 4.44,
      "period_p95_daily_mean_ug_m3": 8.77,
      "max_daily_mean_ug_m3": 13.22,
      "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": 4.56,
      "period_median_ug_m3": 4.05,
      "period_p95_daily_mean_ug_m3": 7.31,
      "max_daily_mean_ug_m3": 9.57,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.36,
      "period_median_ug_m3": 8.2,
      "period_p95_daily_mean_ug_m3": 19.19,
      "max_daily_mean_ug_m3": 21.61,
      "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": "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": 14.22,
      "period_median_ug_m3": 12.72,
      "period_p95_daily_mean_ug_m3": 21.68,
      "max_daily_mean_ug_m3": 22.99,
      "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": 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": 4.66,
      "period_p95_daily_mean_ug_m3": 8.95,
      "max_daily_mean_ug_m3": 12.04,
      "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": 9.94,
      "period_median_ug_m3": 8.58,
      "period_p95_daily_mean_ug_m3": 18.62,
      "max_daily_mean_ug_m3": 23.33,
      "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": 4.65,
      "period_median_ug_m3": 3.82,
      "period_p95_daily_mean_ug_m3": 8.59,
      "max_daily_mean_ug_m3": 15.25,
      "days_above_who_reference": 1
    },
    {
      "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": 9.45,
      "period_median_ug_m3": 8.25,
      "period_p95_daily_mean_ug_m3": 21.59,
      "max_daily_mean_ug_m3": 27.43,
      "days_above_who_reference": 1
    },
    {
      "region": "South West",
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "station_name": "Christchurch Barrack 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": 4.74,
      "period_median_ug_m3": 4.02,
      "period_p95_daily_mean_ug_m3": 9.36,
      "max_daily_mean_ug_m3": 12.25,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.05,
      "period_median_ug_m3": 7.93,
      "period_p95_daily_mean_ug_m3": 13.25,
      "max_daily_mean_ug_m3": 16.11,
      "days_above_who_reference": 1
    },
    {
      "region": "South West",
      "station_code": "EX",
      "uka_id": "UKA00263",
      "station_name": "Exeter Roadside",
      "environment_type": "Urban Traffic",
      "pollutant": "NO2",
      "valid_days": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 13.52,
      "period_median_ug_m3": 13.82,
      "period_p95_daily_mean_ug_m3": 21.08,
      "max_daily_mean_ug_m3": 22.09,
      "days_above_who_reference": 0
    },
    {
      "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": 10.87,
      "period_median_ug_m3": 9.32,
      "period_p95_daily_mean_ug_m3": 21.28,
      "max_daily_mean_ug_m3": 23.37,
      "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": 5.46,
      "period_median_ug_m3": 4.38,
      "period_p95_daily_mean_ug_m3": 11.03,
      "max_daily_mean_ug_m3": 14.89,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.49,
      "period_median_ug_m3": 4.46,
      "period_p95_daily_mean_ug_m3": 6.9,
      "max_daily_mean_ug_m3": 8.48,
      "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": 8.04,
      "period_median_ug_m3": 7.09,
      "period_p95_daily_mean_ug_m3": 13.83,
      "max_daily_mean_ug_m3": 14.32,
      "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": 4.04,
      "period_median_ug_m3": 3.46,
      "period_p95_daily_mean_ug_m3": 7.43,
      "max_daily_mean_ug_m3": 8.46,
      "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": 8.39,
      "period_median_ug_m3": 7.26,
      "period_p95_daily_mean_ug_m3": 16.55,
      "max_daily_mean_ug_m3": 17.68,
      "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": 11.18,
      "period_median_ug_m3": 9.74,
      "period_p95_daily_mean_ug_m3": 19.3,
      "max_daily_mean_ug_m3": 32.59,
      "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": 5.05,
      "period_median_ug_m3": 4.55,
      "period_p95_daily_mean_ug_m3": 9.28,
      "max_daily_mean_ug_m3": 9.89,
      "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": 10.29,
      "period_median_ug_m3": 9.35,
      "period_p95_daily_mean_ug_m3": 16.5,
      "max_daily_mean_ug_m3": 18.11,
      "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": 12.31,
      "period_median_ug_m3": 11.05,
      "period_p95_daily_mean_ug_m3": 21.45,
      "max_daily_mean_ug_m3": 23.75,
      "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": 3.62,
      "period_median_ug_m3": 3.34,
      "period_p95_daily_mean_ug_m3": 9.24,
      "max_daily_mean_ug_m3": 9.83,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.94,
      "period_median_ug_m3": 4.55,
      "period_p95_daily_mean_ug_m3": 8.33,
      "max_daily_mean_ug_m3": 9.49,
      "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": 10.13,
      "period_median_ug_m3": 8.28,
      "period_p95_daily_mean_ug_m3": 20.46,
      "max_daily_mean_ug_m3": 21.93,
      "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": 4.6,
      "period_median_ug_m3": 3.87,
      "period_p95_daily_mean_ug_m3": 8.98,
      "max_daily_mean_ug_m3": 13.06,
      "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": 9.35,
      "period_median_ug_m3": 7.33,
      "period_p95_daily_mean_ug_m3": 19.38,
      "max_daily_mean_ug_m3": 22.09,
      "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": 4.54,
      "period_median_ug_m3": 3.68,
      "period_p95_daily_mean_ug_m3": 9.81,
      "max_daily_mean_ug_m3": 13.1,
      "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": 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": 8.81,
      "period_p95_daily_mean_ug_m3": 21.24,
      "max_daily_mean_ug_m3": 26.82,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.85,
      "period_median_ug_m3": 4.0,
      "period_p95_daily_mean_ug_m3": 10.0,
      "max_daily_mean_ug_m3": 13.07,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 8.46,
      "period_median_ug_m3": 7.94,
      "period_p95_daily_mean_ug_m3": 14.05,
      "max_daily_mean_ug_m3": 15.71,
      "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": 10.12,
      "period_median_ug_m3": 7.96,
      "period_p95_daily_mean_ug_m3": 21.81,
      "max_daily_mean_ug_m3": 28.26,
      "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": 4.85,
      "period_median_ug_m3": 4.01,
      "period_p95_daily_mean_ug_m3": 9.7,
      "max_daily_mean_ug_m3": 12.27,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 23.91,
      "period_median_ug_m3": 23.06,
      "period_p95_daily_mean_ug_m3": 32.67,
      "max_daily_mean_ug_m3": 39.28,
      "days_above_who_reference": 11
    },
    {
      "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": 13.05,
      "period_median_ug_m3": 11.62,
      "period_p95_daily_mean_ug_m3": 21.21,
      "max_daily_mean_ug_m3": 31.36,
      "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": 5.39,
      "period_median_ug_m3": 4.66,
      "period_p95_daily_mean_ug_m3": 9.94,
      "max_daily_mean_ug_m3": 13.5,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.23,
      "period_median_ug_m3": 8.53,
      "period_p95_daily_mean_ug_m3": 15.25,
      "max_daily_mean_ug_m3": 20.21,
      "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": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.44,
      "period_median_ug_m3": 7.37,
      "period_p95_daily_mean_ug_m3": 19.45,
      "max_daily_mean_ug_m3": 20.52,
      "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": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.61,
      "period_median_ug_m3": 3.89,
      "period_p95_daily_mean_ug_m3": 9.93,
      "max_daily_mean_ug_m3": 12.65,
      "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": 20.01,
      "period_median_ug_m3": 19.86,
      "period_p95_daily_mean_ug_m3": 30.85,
      "max_daily_mean_ug_m3": 36.69,
      "days_above_who_reference": 4
    },
    {
      "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": 11.93,
      "period_median_ug_m3": 9.69,
      "period_p95_daily_mean_ug_m3": 21.88,
      "max_daily_mean_ug_m3": 26.82,
      "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": 5.46,
      "period_median_ug_m3": 4.6,
      "period_p95_daily_mean_ug_m3": 11.07,
      "max_daily_mean_ug_m3": 13.79,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.29,
      "period_median_ug_m3": 10.21,
      "period_p95_daily_mean_ug_m3": 15.94,
      "max_daily_mean_ug_m3": 17.7,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 10.13,
      "period_median_ug_m3": 7.99,
      "period_p95_daily_mean_ug_m3": 21.04,
      "max_daily_mean_ug_m3": 24.29,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 4.97,
      "period_median_ug_m3": 3.91,
      "period_p95_daily_mean_ug_m3": 10.75,
      "max_daily_mean_ug_m3": 12.62,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.2,
      "period_median_ug_m3": 9.05,
      "period_p95_daily_mean_ug_m3": 15.41,
      "max_daily_mean_ug_m3": 17.77,
      "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": 4.66,
      "period_median_ug_m3": 3.64,
      "period_p95_daily_mean_ug_m3": 10.64,
      "max_daily_mean_ug_m3": 11.98,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 7.35,
      "period_median_ug_m3": 7.56,
      "period_p95_daily_mean_ug_m3": 12.64,
      "max_daily_mean_ug_m3": 14.81,
      "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": 9.94,
      "period_median_ug_m3": 8.45,
      "period_p95_daily_mean_ug_m3": 19.24,
      "max_daily_mean_ug_m3": 21.9,
      "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": 4.56,
      "period_median_ug_m3": 3.89,
      "period_p95_daily_mean_ug_m3": 9.16,
      "max_daily_mean_ug_m3": 11.88,
      "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": 18.02,
      "period_median_ug_m3": 17.32,
      "period_p95_daily_mean_ug_m3": 24.53,
      "max_daily_mean_ug_m3": 32.22,
      "days_above_who_reference": 1
    },
    {
      "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": 10.38,
      "period_median_ug_m3": 8.75,
      "period_p95_daily_mean_ug_m3": 19.44,
      "max_daily_mean_ug_m3": 23.82,
      "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": 4.74,
      "period_median_ug_m3": 3.99,
      "period_p95_daily_mean_ug_m3": 9.2,
      "max_daily_mean_ug_m3": 11.93,
      "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": 7.4,
      "period_median_ug_m3": 7.63,
      "period_p95_daily_mean_ug_m3": 11.23,
      "max_daily_mean_ug_m3": 12.26,
      "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": 10.11,
      "period_median_ug_m3": 8.07,
      "period_p95_daily_mean_ug_m3": 18.94,
      "max_daily_mean_ug_m3": 23.86,
      "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": 4.74,
      "period_median_ug_m3": 3.93,
      "period_p95_daily_mean_ug_m3": 9.14,
      "max_daily_mean_ug_m3": 13.01,
      "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": 7.86,
      "period_median_ug_m3": 7.72,
      "period_p95_daily_mean_ug_m3": 12.85,
      "max_daily_mean_ug_m3": 14.57,
      "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": 9.14,
      "period_median_ug_m3": 7.54,
      "period_p95_daily_mean_ug_m3": 18.15,
      "max_daily_mean_ug_m3": 22.05,
      "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": 4.38,
      "period_median_ug_m3": 3.53,
      "period_p95_daily_mean_ug_m3": 8.76,
      "max_daily_mean_ug_m3": 11.75,
      "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": 4.18,
      "period_median_ug_m3": 3.43,
      "period_p95_daily_mean_ug_m3": 8.52,
      "max_daily_mean_ug_m3": 9.89,
      "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": 9.36,
      "period_median_ug_m3": 7.14,
      "period_p95_daily_mean_ug_m3": 20.28,
      "max_daily_mean_ug_m3": 21.83,
      "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": 4.44,
      "period_median_ug_m3": 3.3,
      "period_p95_daily_mean_ug_m3": 10.45,
      "max_daily_mean_ug_m3": 12.02,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 25.44,
      "period_median_ug_m3": 24.38,
      "period_p95_daily_mean_ug_m3": 39.32,
      "max_daily_mean_ug_m3": 44.89,
      "days_above_who_reference": 13
    },
    {
      "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": 11.09,
      "period_median_ug_m3": 8.97,
      "period_p95_daily_mean_ug_m3": 22.69,
      "max_daily_mean_ug_m3": 28.28,
      "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": 5.46,
      "period_median_ug_m3": 4.51,
      "period_p95_daily_mean_ug_m3": 12.09,
      "max_daily_mean_ug_m3": 13.8,
      "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": "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": 13.86,
      "period_median_ug_m3": 13.89,
      "period_p95_daily_mean_ug_m3": 18.97,
      "max_daily_mean_ug_m3": 21.23,
      "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": "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": 10.1,
      "period_median_ug_m3": 8.16,
      "period_p95_daily_mean_ug_m3": 20.48,
      "max_daily_mean_ug_m3": 26.41,
      "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": 5.01,
      "period_median_ug_m3": 4.17,
      "period_p95_daily_mean_ug_m3": 11.07,
      "max_daily_mean_ug_m3": 11.81,
      "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": 7.36,
      "period_median_ug_m3": 6.62,
      "period_p95_daily_mean_ug_m3": 12.03,
      "max_daily_mean_ug_m3": 14.34,
      "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": 8.88,
      "period_median_ug_m3": 7.36,
      "period_p95_daily_mean_ug_m3": 18.06,
      "max_daily_mean_ug_m3": 20.16,
      "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": 4.22,
      "period_median_ug_m3": 3.25,
      "period_p95_daily_mean_ug_m3": 8.8,
      "max_daily_mean_ug_m3": 11.19,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 7.94,
      "period_median_ug_m3": 6.81,
      "period_p95_daily_mean_ug_m3": 14.91,
      "max_daily_mean_ug_m3": 15.85,
      "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": 10.39,
      "period_median_ug_m3": 8.59,
      "period_p95_daily_mean_ug_m3": 19.53,
      "max_daily_mean_ug_m3": 22.88,
      "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": 5.2,
      "period_median_ug_m3": 4.36,
      "period_p95_daily_mean_ug_m3": 11.19,
      "max_daily_mean_ug_m3": 12.02,
      "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": 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": 10.22,
      "period_p95_daily_mean_ug_m3": 17.89,
      "max_daily_mean_ug_m3": 22.14,
      "days_above_who_reference": 0
    },
    {
      "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": 10.06,
      "period_median_ug_m3": 8.25,
      "period_p95_daily_mean_ug_m3": 20.26,
      "max_daily_mean_ug_m3": 25.46,
      "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": 5.04,
      "period_median_ug_m3": 4.01,
      "period_p95_daily_mean_ug_m3": 10.93,
      "max_daily_mean_ug_m3": 12.5,
      "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": 9.67,
      "period_median_ug_m3": 7.95,
      "period_p95_daily_mean_ug_m3": 18.88,
      "max_daily_mean_ug_m3": 22.37,
      "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": 4.67,
      "period_median_ug_m3": 3.93,
      "period_p95_daily_mean_ug_m3": 8.92,
      "max_daily_mean_ug_m3": 13.12,
      "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": 7.77,
      "period_median_ug_m3": 7.24,
      "period_p95_daily_mean_ug_m3": 12.47,
      "max_daily_mean_ug_m3": 14.61,
      "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": 12,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 12,
      "period_stat_eligible": false,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 10.31,
      "period_median_ug_m3": 7.6,
      "period_p95_daily_mean_ug_m3": 24.59,
      "max_daily_mean_ug_m3": 30.37,
      "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": 12,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 12,
      "period_stat_eligible": false,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 4.14,
      "period_median_ug_m3": 3.39,
      "period_p95_daily_mean_ug_m3": 8.03,
      "max_daily_mean_ug_m3": 9.9,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 21.72,
      "period_median_ug_m3": 20.34,
      "period_p95_daily_mean_ug_m3": 38.17,
      "max_daily_mean_ug_m3": 40.37,
      "days_above_who_reference": 9
    },
    {
      "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": 12.52,
      "period_median_ug_m3": 9.79,
      "period_p95_daily_mean_ug_m3": 25.07,
      "max_daily_mean_ug_m3": 32.59,
      "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": 6.43,
      "period_median_ug_m3": 4.85,
      "period_p95_daily_mean_ug_m3": 12.3,
      "max_daily_mean_ug_m3": 16.37,
      "days_above_who_reference": 1
    },
    {
      "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": 12.32,
      "period_median_ug_m3": 9.9,
      "period_p95_daily_mean_ug_m3": 23.83,
      "max_daily_mean_ug_m3": 32.96,
      "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": 6.21,
      "period_median_ug_m3": 4.35,
      "period_p95_daily_mean_ug_m3": 12.99,
      "max_daily_mean_ug_m3": 16.2,
      "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": 17.68,
      "period_median_ug_m3": 17.34,
      "period_p95_daily_mean_ug_m3": 27.13,
      "max_daily_mean_ug_m3": 28.51,
      "days_above_who_reference": 3
    },
    {
      "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": 5.66,
      "period_median_ug_m3": 4.33,
      "period_p95_daily_mean_ug_m3": 10.65,
      "max_daily_mean_ug_m3": 15.52,
      "days_above_who_reference": 1
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "station_name": "Dewsbury Ashworth Grange",
      "environment_type": "Urban Background",
      "pollutant": "NO2",
      "valid_days": 27,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 27,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 9.37,
      "period_median_ug_m3": 9.73,
      "period_p95_daily_mean_ug_m3": 16.11,
      "max_daily_mean_ug_m3": 16.61,
      "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": 10.58,
      "period_median_ug_m3": 8.18,
      "period_p95_daily_mean_ug_m3": 23.14,
      "max_daily_mean_ug_m3": 28.25,
      "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": 5.4,
      "period_median_ug_m3": 3.93,
      "period_p95_daily_mean_ug_m3": 11.26,
      "max_daily_mean_ug_m3": 14.95,
      "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": 9.3,
      "period_median_ug_m3": 7.73,
      "period_p95_daily_mean_ug_m3": 19.13,
      "max_daily_mean_ug_m3": 24.86,
      "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": 5.17,
      "period_median_ug_m3": 3.85,
      "period_p95_daily_mean_ug_m3": 10.58,
      "max_daily_mean_ug_m3": 13.72,
      "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": 12.91,
      "period_median_ug_m3": 12.54,
      "period_p95_daily_mean_ug_m3": 21.26,
      "max_daily_mean_ug_m3": 21.87,
      "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": "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": 11.59,
      "period_median_ug_m3": 10.69,
      "period_p95_daily_mean_ug_m3": 20.35,
      "max_daily_mean_ug_m3": 21.57,
      "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": 5.72,
      "period_median_ug_m3": 4.92,
      "period_p95_daily_mean_ug_m3": 9.78,
      "max_daily_mean_ug_m3": 13.01,
      "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": 15.66,
      "period_median_ug_m3": 14.57,
      "period_p95_daily_mean_ug_m3": 23.81,
      "max_daily_mean_ug_m3": 34.21,
      "days_above_who_reference": 1
    },
    {
      "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": 13.89,
      "period_median_ug_m3": 12.33,
      "period_p95_daily_mean_ug_m3": 24.97,
      "max_daily_mean_ug_m3": 26.31,
      "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": 6.9,
      "period_median_ug_m3": 5.79,
      "period_p95_daily_mean_ug_m3": 13.02,
      "max_daily_mean_ug_m3": 15.99,
      "days_above_who_reference": 1
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "station_name": "Immingham Woodlands Avenue",
      "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": 6.56,
      "period_median_ug_m3": 6.06,
      "period_p95_daily_mean_ug_m3": 10.36,
      "max_daily_mean_ug_m3": 19.75,
      "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": 10.37,
      "period_median_ug_m3": 8.6,
      "period_p95_daily_mean_ug_m3": 19.59,
      "max_daily_mean_ug_m3": 22.36,
      "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": 5.15,
      "period_median_ug_m3": 3.93,
      "period_p95_daily_mean_ug_m3": 10.07,
      "max_daily_mean_ug_m3": 13.7,
      "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": 16,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 16,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 11.03,
      "period_median_ug_m3": 9.65,
      "period_p95_daily_mean_ug_m3": 19.59,
      "max_daily_mean_ug_m3": 20.82,
      "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": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 16.57,
      "period_median_ug_m3": 15.26,
      "period_p95_daily_mean_ug_m3": 28.72,
      "max_daily_mean_ug_m3": 29.27,
      "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": 23,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 23,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 6.76,
      "period_median_ug_m3": 5.83,
      "period_p95_daily_mean_ug_m3": 10.16,
      "max_daily_mean_ug_m3": 11.25,
      "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": 14.66,
      "period_median_ug_m3": 15.04,
      "period_p95_daily_mean_ug_m3": 22.63,
      "max_daily_mean_ug_m3": 23.49,
      "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": "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": 10.79,
      "period_median_ug_m3": 8.28,
      "period_p95_daily_mean_ug_m3": 21.74,
      "max_daily_mean_ug_m3": 27.78,
      "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": 5.75,
      "period_median_ug_m3": 4.2,
      "period_p95_daily_mean_ug_m3": 11.27,
      "max_daily_mean_ug_m3": 14.16,
      "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": 12.08,
      "period_median_ug_m3": 9.46,
      "period_p95_daily_mean_ug_m3": 23.3,
      "max_daily_mean_ug_m3": 24.39,
      "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": 6.54,
      "period_median_ug_m3": 4.75,
      "period_p95_daily_mean_ug_m3": 14.37,
      "max_daily_mean_ug_m3": 16.48,
      "days_above_who_reference": 2
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "station_name": "Scunthorpe Town",
      "environment_type": "Urban Industrial",
      "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": 8.81,
      "period_median_ug_m3": 8.52,
      "period_p95_daily_mean_ug_m3": 12.37,
      "max_daily_mean_ug_m3": 15.51,
      "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": 29,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 29,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 15.43,
      "period_median_ug_m3": 10.59,
      "period_p95_daily_mean_ug_m3": 40.23,
      "max_daily_mean_ug_m3": 52.98,
      "days_above_who_reference": 1
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "station_name": "Scunthorpe Town",
      "environment_type": "Urban Industrial",
      "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": 6.6,
      "period_median_ug_m3": 5.7,
      "period_p95_daily_mean_ug_m3": 12.35,
      "max_daily_mean_ug_m3": 13.42,
      "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": 28,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 28,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 25.47,
      "period_median_ug_m3": 23.99,
      "period_p95_daily_mean_ug_m3": 36.83,
      "max_daily_mean_ug_m3": 39.09,
      "days_above_who_reference": 13
    },
    {
      "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": 6.63,
      "period_median_ug_m3": 5.24,
      "period_p95_daily_mean_ug_m3": 12.67,
      "max_daily_mean_ug_m3": 19.08,
      "days_above_who_reference": 1
    },
    {
      "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": 9.97,
      "period_median_ug_m3": 9.5,
      "period_p95_daily_mean_ug_m3": 17.23,
      "max_daily_mean_ug_m3": 21.34,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 11.32,
      "period_median_ug_m3": 8.74,
      "period_p95_daily_mean_ug_m3": 25.67,
      "max_daily_mean_ug_m3": 25.72,
      "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": 25,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 25,
      "period_stat_eligible": true,
      "fixed_panel_eligible": false,
      "period_mean_ug_m3": 5.89,
      "period_median_ug_m3": 4.36,
      "period_p95_daily_mean_ug_m3": 13.71,
      "max_daily_mean_ug_m3": 17.99,
      "days_above_who_reference": 1
    },
    {
      "region": "Yorkshire and the Humber",
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "station_name": "Sheffield Tinsley",
      "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": 15.64,
      "period_median_ug_m3": 15.49,
      "period_p95_daily_mean_ug_m3": 21.27,
      "max_daily_mean_ug_m3": 22.28,
      "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": "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": 12.24,
      "period_median_ug_m3": 9.41,
      "period_p95_daily_mean_ug_m3": 26.56,
      "max_daily_mean_ug_m3": 29.68,
      "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": 30,
      "ratified_days": 0,
      "provisional_or_as_supplied_days": 30,
      "period_stat_eligible": true,
      "fixed_panel_eligible": true,
      "period_mean_ug_m3": 5.36,
      "period_median_ug_m3": 3.77,
      "period_p95_daily_mean_ug_m3": 10.73,
      "max_daily_mean_ug_m3": 16.22,
      "days_above_who_reference": 1
    },
    {
      "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": 11.03,
      "period_median_ug_m3": 8.69,
      "period_p95_daily_mean_ug_m3": 23.92,
      "max_daily_mean_ug_m3": 27.22,
      "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": 5.72,
      "period_median_ug_m3": 4.13,
      "period_p95_daily_mean_ug_m3": 11.84,
      "max_daily_mean_ug_m3": 14.98,
      "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": 7.73,
      "period_median_ug_m3": 6.77,
      "period_p95_daily_mean_ug_m3": 11.77,
      "max_daily_mean_ug_m3": 16.37,
      "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": 11.03,
      "period_median_ug_m3": 10.55,
      "period_p95_daily_mean_ug_m3": 19.57,
      "max_daily_mean_ug_m3": 23.23,
      "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": 5.82,
      "period_median_ug_m3": 5.26,
      "period_p95_daily_mean_ug_m3": 10.3,
      "max_daily_mean_ug_m3": 11.5,
      "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": 12.2,
      "period_median_ug_m3": 11.82,
      "period_p95_daily_mean_ug_m3": 18.35,
      "max_daily_mean_ug_m3": 19.02,
      "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": 13.77,
      "period_median_ug_m3": 11.29,
      "period_p95_daily_mean_ug_m3": 27.29,
      "max_daily_mean_ug_m3": 47.34,
      "days_above_who_reference": 1
    },
    {
      "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": 7.31,
      "period_median_ug_m3": 6.08,
      "period_p95_daily_mean_ug_m3": 12.05,
      "max_daily_mean_ug_m3": 47.08,
      "days_above_who_reference": 1
    }
  ],
  "regional_statistics": [
    {
      "region": "East Midlands",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 12.18,
      "p95_daily_mean_ug_m3": 19.69,
      "minimum_contributing_stations": 7,
      "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": 7.63,
      "p95_daily_mean_ug_m3": 21.13,
      "minimum_contributing_stations": 10,
      "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": "East Midlands",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.05,
      "p95_daily_mean_ug_m3": 10.06,
      "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": "East of England",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 12.13,
      "p95_daily_mean_ug_m3": 24.35,
      "minimum_contributing_stations": 2,
      "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": 8.8,
      "p95_daily_mean_ug_m3": 19.34,
      "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": "East of England",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.05,
      "p95_daily_mean_ug_m3": 9.5,
      "minimum_contributing_stations": 5,
      "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": "London",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 14.35,
      "p95_daily_mean_ug_m3": 25.36,
      "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": 9.35,
      "p95_daily_mean_ug_m3": 21.12,
      "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": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 3.82,
      "p95_daily_mean_ug_m3": 8.94,
      "minimum_contributing_stations": 7,
      "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": 8.77,
      "p95_daily_mean_ug_m3": 12.89,
      "minimum_contributing_stations": 5,
      "median_contributing_stations": 7.5,
      "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": 7.98,
      "p95_daily_mean_ug_m3": 22.27,
      "minimum_contributing_stations": 8,
      "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": 3.83,
      "p95_daily_mean_ug_m3": 10.09,
      "minimum_contributing_stations": 9,
      "median_contributing_stations": 11.0,
      "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": 10.81,
      "p95_daily_mean_ug_m3": 14.88,
      "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": "PM10",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 9.23,
      "p95_daily_mean_ug_m3": 22.16,
      "minimum_contributing_stations": 13,
      "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": "North West",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 4.4,
      "p95_daily_mean_ug_m3": 11.52,
      "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": "South East",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 12.28,
      "p95_daily_mean_ug_m3": 18.64,
      "minimum_contributing_stations": 11,
      "median_contributing_stations": 12.0,
      "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": 9.75,
      "p95_daily_mean_ug_m3": 19.97,
      "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": 4.14,
      "p95_daily_mean_ug_m3": 8.78,
      "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 West",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 8.39,
      "p95_daily_mean_ug_m3": 17.01,
      "minimum_contributing_stations": 8,
      "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": 9.68,
      "p95_daily_mean_ug_m3": 17.9,
      "minimum_contributing_stations": 10,
      "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": 4.22,
      "p95_daily_mean_ug_m3": 8.17,
      "minimum_contributing_stations": 13,
      "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": 9.78,
      "p95_daily_mean_ug_m3": 14.02,
      "minimum_contributing_stations": 13,
      "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": 8.12,
      "p95_daily_mean_ug_m3": 20.07,
      "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": "West Midlands",
      "pollutant": "PM2.5",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 3.98,
      "p95_daily_mean_ug_m3": 9.93,
      "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"
    },
    {
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "valid_days": 30,
      "median_daily_mean_ug_m3": 11.45,
      "p95_daily_mean_ug_m3": 17.16,
      "minimum_contributing_stations": 11,
      "median_contributing_stations": 14.0,
      "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": 9.11,
      "p95_daily_mean_ug_m3": 22.71,
      "minimum_contributing_stations": 15,
      "median_contributing_stations": 16.0,
      "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": 4.28,
      "p95_daily_mean_ug_m3": 11.48,
      "minimum_contributing_stations": 17,
      "median_contributing_stations": 18.0,
      "maximum_contributing_stations": 19,
      "regional_comparison_eligible_days": 30,
      "regional_comparison_eligible": true,
      "representativeness_note": "multi-station regional descriptive summary"
    }
  ],
  "daily_regional_statistics": [
    {
      "date": "2026-08-12",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.88,
      "regional_daily_mean_ug_m3": 14.39,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 20.92,
      "regional_daily_mean_ug_m3": 20.62,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.97,
      "regional_daily_mean_ug_m3": 7.04,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.82,
      "regional_daily_mean_ug_m3": 22.12,
      "contributing_stations": 3,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 16.22,
      "regional_daily_mean_ug_m3": 16.32,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.44,
      "regional_daily_mean_ug_m3": 5.71,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 27.48,
      "regional_daily_mean_ug_m3": 30.4,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 19.71,
      "regional_daily_mean_ug_m3": 19.73,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.48,
      "regional_daily_mean_ug_m3": 6.47,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.15,
      "regional_daily_mean_ug_m3": 12.91,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.99,
      "regional_daily_mean_ug_m3": 22.1,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.94,
      "regional_daily_mean_ug_m3": 7.65,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.56,
      "regional_daily_mean_ug_m3": 15.97,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 23.99,
      "regional_daily_mean_ug_m3": 22.99,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.62,
      "regional_daily_mean_ug_m3": 9.87,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.64,
      "regional_daily_mean_ug_m3": 22.57,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 16.53,
      "regional_daily_mean_ug_m3": 18.81,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.71,
      "regional_daily_mean_ug_m3": 5.73,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.74,
      "regional_daily_mean_ug_m3": 18.23,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 18.78,
      "regional_daily_mean_ug_m3": 20.1,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.55,
      "regional_daily_mean_ug_m3": 7.15,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.33,
      "regional_daily_mean_ug_m3": 17.62,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 20.04,
      "regional_daily_mean_ug_m3": 20.43,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.51,
      "regional_daily_mean_ug_m3": 6.54,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.95,
      "regional_daily_mean_ug_m3": 17.17,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 22.72,
      "regional_daily_mean_ug_m3": 23.45,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-12",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.46,
      "regional_daily_mean_ug_m3": 7.68,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.7,
      "regional_daily_mean_ug_m3": 24.44,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 23.05,
      "regional_daily_mean_ug_m3": 22.82,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.0,
      "regional_daily_mean_ug_m3": 8.0,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 30.23,
      "regional_daily_mean_ug_m3": 26.33,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.6,
      "regional_daily_mean_ug_m3": 20.87,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.69,
      "regional_daily_mean_ug_m3": 7.35,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 37.6,
      "regional_daily_mean_ug_m3": 38.18,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 20.25,
      "regional_daily_mean_ug_m3": 21.53,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.11,
      "regional_daily_mean_ug_m3": 7.17,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.35,
      "regional_daily_mean_ug_m3": 17.94,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 28.24,
      "regional_daily_mean_ug_m3": 27.63,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.45,
      "regional_daily_mean_ug_m3": 10.39,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.63,
      "regional_daily_mean_ug_m3": 18.23,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 23.93,
      "regional_daily_mean_ug_m3": 24.15,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.48,
      "regional_daily_mean_ug_m3": 10.08,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.55,
      "regional_daily_mean_ug_m3": 26.85,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.7,
      "regional_daily_mean_ug_m3": 21.95,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.6,
      "regional_daily_mean_ug_m3": 7.14,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.61,
      "regional_daily_mean_ug_m3": 20.54,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 18.26,
      "regional_daily_mean_ug_m3": 17.97,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.71,
      "regional_daily_mean_ug_m3": 7.28,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.31,
      "regional_daily_mean_ug_m3": 20.01,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 23.39,
      "regional_daily_mean_ug_m3": 24.1,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.25,
      "regional_daily_mean_ug_m3": 8.4,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.01,
      "regional_daily_mean_ug_m3": 21.94,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 27.78,
      "regional_daily_mean_ug_m3": 28.52,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-13",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.9,
      "regional_daily_mean_ug_m3": 9.97,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.42,
      "regional_daily_mean_ug_m3": 16.76,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.34,
      "regional_daily_mean_ug_m3": 10.24,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.01,
      "regional_daily_mean_ug_m3": 4.39,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 27.24,
      "regional_daily_mean_ug_m3": 25.05,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 20.03,
      "regional_daily_mean_ug_m3": 21.77,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.88,
      "regional_daily_mean_ug_m3": 8.56,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.47,
      "regional_daily_mean_ug_m3": 17.46,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 23.33,
      "regional_daily_mean_ug_m3": 23.22,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.85,
      "regional_daily_mean_ug_m3": 9.63,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.9,
      "regional_daily_mean_ug_m3": 7.79,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.57,
      "regional_daily_mean_ug_m3": 9.35,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.32,
      "regional_daily_mean_ug_m3": 4.53,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.5,
      "regional_daily_mean_ug_m3": 9.14,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.1,
      "regional_daily_mean_ug_m3": 9.48,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.71,
      "regional_daily_mean_ug_m3": 4.67,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.11,
      "regional_daily_mean_ug_m3": 16.63,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.83,
      "regional_daily_mean_ug_m3": 23.05,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.03,
      "regional_daily_mean_ug_m3": 10.21,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.52,
      "regional_daily_mean_ug_m3": 8.17,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 17.47,
      "regional_daily_mean_ug_m3": 14.99,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.42,
      "regional_daily_mean_ug_m3": 9.56,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.08,
      "regional_daily_mean_ug_m3": 10.16,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.98,
      "regional_daily_mean_ug_m3": 11.26,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.18,
      "regional_daily_mean_ug_m3": 4.07,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.56,
      "regional_daily_mean_ug_m3": 9.95,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.69,
      "regional_daily_mean_ug_m3": 10.91,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-14",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.74,
      "regional_daily_mean_ug_m3": 4.48,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.96,
      "regional_daily_mean_ug_m3": 10.69,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.32,
      "regional_daily_mean_ug_m3": 6.59,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.46,
      "regional_daily_mean_ug_m3": 2.74,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.2,
      "regional_daily_mean_ug_m3": 13.79,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.79,
      "regional_daily_mean_ug_m3": 10.47,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.68,
      "regional_daily_mean_ug_m3": 4.67,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.21,
      "regional_daily_mean_ug_m3": 9.79,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.84,
      "regional_daily_mean_ug_m3": 12.4,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.06,
      "regional_daily_mean_ug_m3": 4.9,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.23,
      "regional_daily_mean_ug_m3": 6.68,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 3.39,
      "regional_daily_mean_ug_m3": 4.18,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 1.38,
      "regional_daily_mean_ug_m3": 1.69,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.96,
      "regional_daily_mean_ug_m3": 6.5,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.47,
      "regional_daily_mean_ug_m3": 5.79,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.25,
      "regional_daily_mean_ug_m3": 2.68,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.65,
      "regional_daily_mean_ug_m3": 10.53,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.68,
      "regional_daily_mean_ug_m3": 13.64,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.96,
      "regional_daily_mean_ug_m3": 5.6,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.04,
      "regional_daily_mean_ug_m3": 8.72,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.67,
      "regional_daily_mean_ug_m3": 9.72,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.66,
      "regional_daily_mean_ug_m3": 4.79,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.72,
      "regional_daily_mean_ug_m3": 6.67,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.08,
      "regional_daily_mean_ug_m3": 6.17,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.23,
      "regional_daily_mean_ug_m3": 2.41,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.68,
      "regional_daily_mean_ug_m3": 8.08,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.18,
      "regional_daily_mean_ug_m3": 6.68,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-15",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.78,
      "regional_daily_mean_ug_m3": 2.8,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.32,
      "regional_daily_mean_ug_m3": 12.38,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.92,
      "regional_daily_mean_ug_m3": 7.58,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.17,
      "regional_daily_mean_ug_m3": 3.32,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.36,
      "regional_daily_mean_ug_m3": 13.47,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.27,
      "regional_daily_mean_ug_m3": 9.5,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.43,
      "regional_daily_mean_ug_m3": 4.48,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.67,
      "regional_daily_mean_ug_m3": 14.62,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.62,
      "regional_daily_mean_ug_m3": 16.17,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.22,
      "regional_daily_mean_ug_m3": 5.34,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.83,
      "regional_daily_mean_ug_m3": 6.97,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.27,
      "regional_daily_mean_ug_m3": 5.47,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.65,
      "regional_daily_mean_ug_m3": 2.97,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.1,
      "regional_daily_mean_ug_m3": 10.94,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.02,
      "regional_daily_mean_ug_m3": 8.04,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.29,
      "regional_daily_mean_ug_m3": 4.27,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.63,
      "regional_daily_mean_ug_m3": 9.73,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.76,
      "regional_daily_mean_ug_m3": 12.24,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.74,
      "regional_daily_mean_ug_m3": 5.2,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.67,
      "regional_daily_mean_ug_m3": 7.85,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.22,
      "regional_daily_mean_ug_m3": 9.95,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.28,
      "regional_daily_mean_ug_m3": 4.78,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.18,
      "regional_daily_mean_ug_m3": 9.4,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.78,
      "regional_daily_mean_ug_m3": 8.69,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.9,
      "regional_daily_mean_ug_m3": 3.89,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.23,
      "regional_daily_mean_ug_m3": 10.31,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.67,
      "regional_daily_mean_ug_m3": 7.55,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-16",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.49,
      "regional_daily_mean_ug_m3": 3.75,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.91,
      "regional_daily_mean_ug_m3": 14.31,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.71,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.47,
      "regional_daily_mean_ug_m3": 4.51,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.38,
      "regional_daily_mean_ug_m3": 7.38,
      "contributing_stations": 2,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.42,
      "regional_daily_mean_ug_m3": 10.92,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.8,
      "regional_daily_mean_ug_m3": 4.75,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.64,
      "regional_daily_mean_ug_m3": 10.9,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.91,
      "regional_daily_mean_ug_m3": 11.31,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.35,
      "regional_daily_mean_ug_m3": 3.57,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.47,
      "regional_daily_mean_ug_m3": 12.9,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.83,
      "regional_daily_mean_ug_m3": 8.27,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.0,
      "regional_daily_mean_ug_m3": 5.18,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.89,
      "regional_daily_mean_ug_m3": 10.33,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.65,
      "regional_daily_mean_ug_m3": 7.6,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.41,
      "regional_daily_mean_ug_m3": 4.28,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.07,
      "regional_daily_mean_ug_m3": 8.82,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.09,
      "regional_daily_mean_ug_m3": 10.69,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.79,
      "regional_daily_mean_ug_m3": 4.17,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.51,
      "regional_daily_mean_ug_m3": 6.98,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.16,
      "regional_daily_mean_ug_m3": 8.08,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.42,
      "regional_daily_mean_ug_m3": 3.92,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.69,
      "regional_daily_mean_ug_m3": 9.72,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.35,
      "regional_daily_mean_ug_m3": 8.86,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.07,
      "regional_daily_mean_ug_m3": 3.2,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.98,
      "regional_daily_mean_ug_m3": 16.04,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.44,
      "regional_daily_mean_ug_m3": 13.13,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-17",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.36,
      "regional_daily_mean_ug_m3": 8.4,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.65,
      "regional_daily_mean_ug_m3": 12.08,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.46,
      "regional_daily_mean_ug_m3": 7.26,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.49,
      "regional_daily_mean_ug_m3": 3.7,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.77,
      "regional_daily_mean_ug_m3": 6.77,
      "contributing_stations": 2,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.97,
      "regional_daily_mean_ug_m3": 10.61,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.4,
      "regional_daily_mean_ug_m3": 5.34,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.08,
      "regional_daily_mean_ug_m3": 11.07,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.93,
      "regional_daily_mean_ug_m3": 12.78,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.84,
      "regional_daily_mean_ug_m3": 5.18,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.29,
      "regional_daily_mean_ug_m3": 6.84,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.16,
      "regional_daily_mean_ug_m3": 5.21,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.14,
      "regional_daily_mean_ug_m3": 2.28,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.35,
      "regional_daily_mean_ug_m3": 7.28,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.69,
      "regional_daily_mean_ug_m3": 6.78,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.17,
      "regional_daily_mean_ug_m3": 3.28,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.29,
      "regional_daily_mean_ug_m3": 9.25,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.02,
      "regional_daily_mean_ug_m3": 11.58,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.66,
      "regional_daily_mean_ug_m3": 4.85,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.42,
      "regional_daily_mean_ug_m3": 5.21,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.49,
      "regional_daily_mean_ug_m3": 10.19,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.5,
      "regional_daily_mean_ug_m3": 4.63,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.73,
      "regional_daily_mean_ug_m3": 9.72,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.26,
      "regional_daily_mean_ug_m3": 8.48,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.97,
      "regional_daily_mean_ug_m3": 3.96,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.36,
      "regional_daily_mean_ug_m3": 10.42,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.55,
      "regional_daily_mean_ug_m3": 6.74,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-18",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.09,
      "regional_daily_mean_ug_m3": 3.36,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.34,
      "regional_daily_mean_ug_m3": 14.31,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.01,
      "regional_daily_mean_ug_m3": 7.32,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.62,
      "regional_daily_mean_ug_m3": 3.64,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.73,
      "regional_daily_mean_ug_m3": 14.54,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.44,
      "regional_daily_mean_ug_m3": 7.5,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.68,
      "regional_daily_mean_ug_m3": 3.53,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.9,
      "regional_daily_mean_ug_m3": 12.2,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.3,
      "regional_daily_mean_ug_m3": 9.45,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.53,
      "regional_daily_mean_ug_m3": 3.35,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.71,
      "regional_daily_mean_ug_m3": 10.38,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.06,
      "regional_daily_mean_ug_m3": 5.95,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.67,
      "regional_daily_mean_ug_m3": 3.02,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.9,
      "regional_daily_mean_ug_m3": 10.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.7,
      "regional_daily_mean_ug_m3": 7.12,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.41,
      "regional_daily_mean_ug_m3": 3.56,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.65,
      "regional_daily_mean_ug_m3": 11.18,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.98,
      "regional_daily_mean_ug_m3": 7.66,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.22,
      "regional_daily_mean_ug_m3": 3.31,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.13,
      "regional_daily_mean_ug_m3": 6.7,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.76,
      "regional_daily_mean_ug_m3": 7.62,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.15,
      "regional_daily_mean_ug_m3": 3.67,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.49,
      "regional_daily_mean_ug_m3": 11.3,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.5,
      "regional_daily_mean_ug_m3": 7.54,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.13,
      "regional_daily_mean_ug_m3": 3.17,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.97,
      "regional_daily_mean_ug_m3": 14.96,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.97,
      "regional_daily_mean_ug_m3": 9.54,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-19",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.58,
      "regional_daily_mean_ug_m3": 6.11,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.33,
      "regional_daily_mean_ug_m3": 13.54,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.12,
      "regional_daily_mean_ug_m3": 7.6,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.88,
      "regional_daily_mean_ug_m3": 3.97,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.51,
      "regional_daily_mean_ug_m3": 12.06,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.05,
      "regional_daily_mean_ug_m3": 7.1,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.17,
      "regional_daily_mean_ug_m3": 3.1,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.24,
      "regional_daily_mean_ug_m3": 10.85,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.54,
      "regional_daily_mean_ug_m3": 7.14,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.58,
      "regional_daily_mean_ug_m3": 2.67,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.97,
      "regional_daily_mean_ug_m3": 7.42,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.67,
      "regional_daily_mean_ug_m3": 10.12,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.4,
      "regional_daily_mean_ug_m3": 4.65,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.01,
      "regional_daily_mean_ug_m3": 12.65,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.02,
      "regional_daily_mean_ug_m3": 6.77,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.2,
      "regional_daily_mean_ug_m3": 3.77,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.88,
      "regional_daily_mean_ug_m3": 9.96,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.3,
      "regional_daily_mean_ug_m3": 7.41,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.85,
      "regional_daily_mean_ug_m3": 2.94,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.2,
      "regional_daily_mean_ug_m3": 8.28,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.24,
      "regional_daily_mean_ug_m3": 8.13,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.39,
      "regional_daily_mean_ug_m3": 3.55,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.47,
      "regional_daily_mean_ug_m3": 12.23,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.83,
      "regional_daily_mean_ug_m3": 7.25,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.66,
      "regional_daily_mean_ug_m3": 3.67,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.16,
      "regional_daily_mean_ug_m3": 12.63,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.97,
      "regional_daily_mean_ug_m3": 8.66,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-20",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.28,
      "regional_daily_mean_ug_m3": 4.82,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.71,
      "regional_daily_mean_ug_m3": 11.73,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.6,
      "regional_daily_mean_ug_m3": 7.03,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.98,
      "regional_daily_mean_ug_m3": 3.19,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.88,
      "regional_daily_mean_ug_m3": 12.89,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.98,
      "regional_daily_mean_ug_m3": 7.33,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.28,
      "regional_daily_mean_ug_m3": 3.35,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.57,
      "regional_daily_mean_ug_m3": 8.96,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.26,
      "regional_daily_mean_ug_m3": 8.55,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.62,
      "regional_daily_mean_ug_m3": 3.56,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.42,
      "regional_daily_mean_ug_m3": 8.75,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.43,
      "regional_daily_mean_ug_m3": 7.84,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.34,
      "regional_daily_mean_ug_m3": 3.37,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.1,
      "regional_daily_mean_ug_m3": 12.55,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.71,
      "regional_daily_mean_ug_m3": 7.29,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.77,
      "regional_daily_mean_ug_m3": 3.27,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.23,
      "regional_daily_mean_ug_m3": 12.04,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.04,
      "regional_daily_mean_ug_m3": 9.36,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.65,
      "regional_daily_mean_ug_m3": 3.88,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.27,
      "regional_daily_mean_ug_m3": 14.9,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.23,
      "regional_daily_mean_ug_m3": 9.72,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.55,
      "regional_daily_mean_ug_m3": 4.9,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.44,
      "regional_daily_mean_ug_m3": 12.71,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.31,
      "regional_daily_mean_ug_m3": 7.63,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.4,
      "regional_daily_mean_ug_m3": 3.5,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.36,
      "regional_daily_mean_ug_m3": 13.02,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.05,
      "regional_daily_mean_ug_m3": 8.23,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-21",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.57,
      "regional_daily_mean_ug_m3": 3.56,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.48,
      "regional_daily_mean_ug_m3": 14.36,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.55,
      "regional_daily_mean_ug_m3": 8.55,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.43,
      "regional_daily_mean_ug_m3": 4.34,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.9,
      "regional_daily_mean_ug_m3": 16.08,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.88,
      "regional_daily_mean_ug_m3": 10.39,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.57,
      "regional_daily_mean_ug_m3": 5.6,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.41,
      "regional_daily_mean_ug_m3": 10.98,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.6,
      "regional_daily_mean_ug_m3": 9.13,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.83,
      "regional_daily_mean_ug_m3": 4.81,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.8,
      "regional_daily_mean_ug_m3": 11.33,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.85,
      "regional_daily_mean_ug_m3": 14.51,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.09,
      "regional_daily_mean_ug_m3": 9.04,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.33,
      "regional_daily_mean_ug_m3": 13.9,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.35,
      "regional_daily_mean_ug_m3": 10.02,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.92,
      "regional_daily_mean_ug_m3": 6.25,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.41,
      "regional_daily_mean_ug_m3": 13.35,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.44,
      "regional_daily_mean_ug_m3": 9.99,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.31,
      "regional_daily_mean_ug_m3": 5.24,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.52,
      "regional_daily_mean_ug_m3": 13.12,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.13,
      "regional_daily_mean_ug_m3": 7.49,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.43,
      "regional_daily_mean_ug_m3": 3.98,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.69,
      "regional_daily_mean_ug_m3": 12.8,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.5,
      "regional_daily_mean_ug_m3": 7.51,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.08,
      "regional_daily_mean_ug_m3": 4.14,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.3,
      "regional_daily_mean_ug_m3": 14.2,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.59,
      "regional_daily_mean_ug_m3": 11.28,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-22",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.97,
      "regional_daily_mean_ug_m3": 6.77,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.47,
      "regional_daily_mean_ug_m3": 10.82,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.74,
      "regional_daily_mean_ug_m3": 16.55,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.64,
      "regional_daily_mean_ug_m3": 9.89,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.18,
      "regional_daily_mean_ug_m3": 15.19,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.15,
      "regional_daily_mean_ug_m3": 12.03,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.58,
      "regional_daily_mean_ug_m3": 7.69,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.64,
      "regional_daily_mean_ug_m3": 17.33,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.7,
      "regional_daily_mean_ug_m3": 11.17,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.1,
      "regional_daily_mean_ug_m3": 6.2,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.91,
      "regional_daily_mean_ug_m3": 10.46,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.49,
      "regional_daily_mean_ug_m3": 13.11,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.35,
      "regional_daily_mean_ug_m3": 8.72,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.09,
      "regional_daily_mean_ug_m3": 12.12,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.0,
      "regional_daily_mean_ug_m3": 13.0,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.77,
      "regional_daily_mean_ug_m3": 9.51,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.66,
      "regional_daily_mean_ug_m3": 13.59,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.9,
      "regional_daily_mean_ug_m3": 11.7,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.47,
      "regional_daily_mean_ug_m3": 6.66,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.42,
      "regional_daily_mean_ug_m3": 12.53,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.43,
      "regional_daily_mean_ug_m3": 10.76,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.61,
      "regional_daily_mean_ug_m3": 6.79,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.01,
      "regional_daily_mean_ug_m3": 12.46,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.98,
      "regional_daily_mean_ug_m3": 13.2,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.59,
      "regional_daily_mean_ug_m3": 9.04,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.71,
      "regional_daily_mean_ug_m3": 15.0,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.54,
      "regional_daily_mean_ug_m3": 16.07,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-23",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.86,
      "regional_daily_mean_ug_m3": 10.97,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.28,
      "regional_daily_mean_ug_m3": 9.94,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.87,
      "regional_daily_mean_ug_m3": 10.3,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.32,
      "regional_daily_mean_ug_m3": 5.39,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.55,
      "regional_daily_mean_ug_m3": 14.84,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.7,
      "regional_daily_mean_ug_m3": 10.39,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.92,
      "regional_daily_mean_ug_m3": 5.75,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.28,
      "regional_daily_mean_ug_m3": 13.05,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.34,
      "regional_daily_mean_ug_m3": 13.67,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.04,
      "regional_daily_mean_ug_m3": 6.28,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.51,
      "regional_daily_mean_ug_m3": 13.3,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.86,
      "regional_daily_mean_ug_m3": 9.45,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.51,
      "regional_daily_mean_ug_m3": 5.75,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.5,
      "regional_daily_mean_ug_m3": 12.29,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.86,
      "regional_daily_mean_ug_m3": 11.7,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.27,
      "regional_daily_mean_ug_m3": 6.31,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.84,
      "regional_daily_mean_ug_m3": 9.67,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.7,
      "regional_daily_mean_ug_m3": 14.72,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.66,
      "regional_daily_mean_ug_m3": 6.73,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.68,
      "regional_daily_mean_ug_m3": 10.62,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.91,
      "regional_daily_mean_ug_m3": 16.74,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.61,
      "regional_daily_mean_ug_m3": 8.08,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.36,
      "regional_daily_mean_ug_m3": 11.23,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.75,
      "regional_daily_mean_ug_m3": 12.1,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.7,
      "regional_daily_mean_ug_m3": 5.75,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.64,
      "regional_daily_mean_ug_m3": 15.3,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.27,
      "regional_daily_mean_ug_m3": 12.6,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-24",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.6,
      "regional_daily_mean_ug_m3": 7.0,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.9,
      "regional_daily_mean_ug_m3": 9.41,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.87,
      "regional_daily_mean_ug_m3": 14.01,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.93,
      "regional_daily_mean_ug_m3": 5.9,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.56,
      "regional_daily_mean_ug_m3": 14.58,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.93,
      "regional_daily_mean_ug_m3": 14.4,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.1,
      "regional_daily_mean_ug_m3": 6.22,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.75,
      "regional_daily_mean_ug_m3": 14.74,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.23,
      "regional_daily_mean_ug_m3": 15.91,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.28,
      "regional_daily_mean_ug_m3": 6.36,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.4,
      "regional_daily_mean_ug_m3": 10.18,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.81,
      "regional_daily_mean_ug_m3": 11.99,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.23,
      "regional_daily_mean_ug_m3": 5.37,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.73,
      "regional_daily_mean_ug_m3": 8.36,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.01,
      "regional_daily_mean_ug_m3": 14.11,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.0,
      "regional_daily_mean_ug_m3": 6.35,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.51,
      "regional_daily_mean_ug_m3": 13.36,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.72,
      "regional_daily_mean_ug_m3": 16.55,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.37,
      "regional_daily_mean_ug_m3": 7.12,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.38,
      "regional_daily_mean_ug_m3": 13.5,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 15.55,
      "regional_daily_mean_ug_m3": 16.07,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.97,
      "regional_daily_mean_ug_m3": 7.24,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.03,
      "regional_daily_mean_ug_m3": 9.68,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.48,
      "regional_daily_mean_ug_m3": 14.48,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.7,
      "regional_daily_mean_ug_m3": 5.67,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.57,
      "regional_daily_mean_ug_m3": 10.46,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.42,
      "regional_daily_mean_ug_m3": 15.18,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-25",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.2,
      "regional_daily_mean_ug_m3": 6.18,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.04,
      "regional_daily_mean_ug_m3": 13.23,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.3,
      "regional_daily_mean_ug_m3": 20.85,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.96,
      "regional_daily_mean_ug_m3": 11.87,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.0,
      "regional_daily_mean_ug_m3": 17.6,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 18.49,
      "regional_daily_mean_ug_m3": 18.18,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.27,
      "regional_daily_mean_ug_m3": 11.43,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.76,
      "regional_daily_mean_ug_m3": 22.16,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 21.84,
      "regional_daily_mean_ug_m3": 21.79,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 13.56,
      "regional_daily_mean_ug_m3": 13.31,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.94,
      "regional_daily_mean_ug_m3": 14.7,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 19.23,
      "regional_daily_mean_ug_m3": 19.99,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.65,
      "regional_daily_mean_ug_m3": 10.11,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.66,
      "regional_daily_mean_ug_m3": 13.09,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 19.99,
      "regional_daily_mean_ug_m3": 21.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 12.77,
      "regional_daily_mean_ug_m3": 12.97,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.57,
      "regional_daily_mean_ug_m3": 16.52,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 17.86,
      "regional_daily_mean_ug_m3": 19.12,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.06,
      "regional_daily_mean_ug_m3": 10.67,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.17,
      "regional_daily_mean_ug_m3": 11.54,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 17.16,
      "regional_daily_mean_ug_m3": 17.01,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.62,
      "regional_daily_mean_ug_m3": 9.18,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.63,
      "regional_daily_mean_ug_m3": 15.44,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 20.1,
      "regional_daily_mean_ug_m3": 19.84,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.02,
      "regional_daily_mean_ug_m3": 11.08,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.47,
      "regional_daily_mean_ug_m3": 14.22,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 22.51,
      "regional_daily_mean_ug_m3": 23.25,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-26",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 12.0,
      "regional_daily_mean_ug_m3": 11.61,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.05,
      "regional_daily_mean_ug_m3": 19.4,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.86,
      "regional_daily_mean_ug_m3": 15.56,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.41,
      "regional_daily_mean_ug_m3": 10.94,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.45,
      "regional_daily_mean_ug_m3": 21.78,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.85,
      "regional_daily_mean_ug_m3": 15.63,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.98,
      "regional_daily_mean_ug_m3": 10.76,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 22.55,
      "regional_daily_mean_ug_m3": 24.8,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.13,
      "regional_daily_mean_ug_m3": 13.57,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.83,
      "regional_daily_mean_ug_m3": 8.23,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.03,
      "regional_daily_mean_ug_m3": 17.41,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 22.51,
      "regional_daily_mean_ug_m3": 22.36,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 11.75,
      "regional_daily_mean_ug_m3": 12.47,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.51,
      "regional_daily_mean_ug_m3": 17.65,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 18.0,
      "regional_daily_mean_ug_m3": 18.43,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 13.48,
      "regional_daily_mean_ug_m3": 13.53,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.28,
      "regional_daily_mean_ug_m3": 15.16,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.61,
      "regional_daily_mean_ug_m3": 13.02,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.25,
      "regional_daily_mean_ug_m3": 7.76,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.62,
      "regional_daily_mean_ug_m3": 10.44,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.75,
      "regional_daily_mean_ug_m3": 12.26,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.31,
      "regional_daily_mean_ug_m3": 7.27,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.03,
      "regional_daily_mean_ug_m3": 18.65,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 17.04,
      "regional_daily_mean_ug_m3": 17.05,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 12.02,
      "regional_daily_mean_ug_m3": 12.18,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.11,
      "regional_daily_mean_ug_m3": 18.69,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 22.69,
      "regional_daily_mean_ug_m3": 22.56,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-27",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 14.97,
      "regional_daily_mean_ug_m3": 14.77,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.95,
      "regional_daily_mean_ug_m3": 16.19,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.34,
      "regional_daily_mean_ug_m3": 10.38,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.06,
      "regional_daily_mean_ug_m3": 5.9,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.46,
      "regional_daily_mean_ug_m3": 11.41,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.34,
      "regional_daily_mean_ug_m3": 8.14,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.29,
      "regional_daily_mean_ug_m3": 3.46,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.36,
      "regional_daily_mean_ug_m3": 13.59,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.66,
      "regional_daily_mean_ug_m3": 8.54,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.57,
      "regional_daily_mean_ug_m3": 3.52,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.79,
      "regional_daily_mean_ug_m3": 10.59,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.94,
      "regional_daily_mean_ug_m3": 13.32,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 8.99,
      "regional_daily_mean_ug_m3": 9.09,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.39,
      "regional_daily_mean_ug_m3": 14.06,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 14.89,
      "regional_daily_mean_ug_m3": 14.34,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 10.0,
      "regional_daily_mean_ug_m3": 9.58,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.73,
      "regional_daily_mean_ug_m3": 9.92,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.17,
      "regional_daily_mean_ug_m3": 10.11,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.11,
      "regional_daily_mean_ug_m3": 4.08,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.1,
      "regional_daily_mean_ug_m3": 8.14,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.91,
      "regional_daily_mean_ug_m3": 8.39,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.36,
      "regional_daily_mean_ug_m3": 3.67,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.21,
      "regional_daily_mean_ug_m3": 13.42,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.4,
      "regional_daily_mean_ug_m3": 9.62,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.52,
      "regional_daily_mean_ug_m3": 4.71,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.03,
      "regional_daily_mean_ug_m3": 14.29,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.6,
      "regional_daily_mean_ug_m3": 12.71,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-28",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 9.15,
      "regional_daily_mean_ug_m3": 8.61,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.58,
      "regional_daily_mean_ug_m3": 14.74,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.63,
      "regional_daily_mean_ug_m3": 7.98,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.66,
      "regional_daily_mean_ug_m3": 4.77,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.87,
      "regional_daily_mean_ug_m3": 10.28,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.38,
      "regional_daily_mean_ug_m3": 6.43,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.28,
      "regional_daily_mean_ug_m3": 3.39,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.03,
      "regional_daily_mean_ug_m3": 14.55,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.88,
      "regional_daily_mean_ug_m3": 6.58,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.23,
      "regional_daily_mean_ug_m3": 3.26,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.92,
      "regional_daily_mean_ug_m3": 10.5,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.64,
      "regional_daily_mean_ug_m3": 10.3,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.08,
      "regional_daily_mean_ug_m3": 7.4,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.05,
      "regional_daily_mean_ug_m3": 12.94,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.47,
      "regional_daily_mean_ug_m3": 10.05,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.21,
      "regional_daily_mean_ug_m3": 6.76,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.95,
      "regional_daily_mean_ug_m3": 7.08,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.52,
      "regional_daily_mean_ug_m3": 8.75,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.1,
      "regional_daily_mean_ug_m3": 4.13,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.97,
      "regional_daily_mean_ug_m3": 5.46,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.92,
      "regional_daily_mean_ug_m3": 7.0,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.98,
      "regional_daily_mean_ug_m3": 3.21,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.72,
      "regional_daily_mean_ug_m3": 14.11,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.77,
      "regional_daily_mean_ug_m3": 7.95,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.56,
      "regional_daily_mean_ug_m3": 4.68,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.53,
      "regional_daily_mean_ug_m3": 16.04,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.04,
      "regional_daily_mean_ug_m3": 11.87,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-29",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 7.77,
      "regional_daily_mean_ug_m3": 7.73,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.41,
      "regional_daily_mean_ug_m3": 9.2,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.83,
      "regional_daily_mean_ug_m3": 7.15,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.52,
      "regional_daily_mean_ug_m3": 3.76,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.31,
      "regional_daily_mean_ug_m3": 6.68,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.53,
      "regional_daily_mean_ug_m3": 6.53,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.25,
      "regional_daily_mean_ug_m3": 3.27,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.34,
      "regional_daily_mean_ug_m3": 12.59,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.64,
      "regional_daily_mean_ug_m3": 7.43,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.42,
      "regional_daily_mean_ug_m3": 3.45,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.09,
      "regional_daily_mean_ug_m3": 12.09,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.5,
      "regional_daily_mean_ug_m3": 6.49,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.17,
      "regional_daily_mean_ug_m3": 4.17,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.49,
      "regional_daily_mean_ug_m3": 9.38,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.74,
      "regional_daily_mean_ug_m3": 8.14,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.24,
      "regional_daily_mean_ug_m3": 4.75,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.46,
      "regional_daily_mean_ug_m3": 6.81,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.35,
      "regional_daily_mean_ug_m3": 9.32,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.07,
      "regional_daily_mean_ug_m3": 4.11,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.67,
      "regional_daily_mean_ug_m3": 5.52,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.59,
      "regional_daily_mean_ug_m3": 9.79,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.1,
      "regional_daily_mean_ug_m3": 4.47,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.14,
      "regional_daily_mean_ug_m3": 8.29,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.72,
      "regional_daily_mean_ug_m3": 7.62,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.75,
      "regional_daily_mean_ug_m3": 3.73,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.33,
      "regional_daily_mean_ug_m3": 11.28,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.49,
      "regional_daily_mean_ug_m3": 8.9,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-30",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.0,
      "regional_daily_mean_ug_m3": 4.96,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.71,
      "regional_daily_mean_ug_m3": 8.31,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.65,
      "regional_daily_mean_ug_m3": 6.36,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.21,
      "regional_daily_mean_ug_m3": 3.2,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.32,
      "regional_daily_mean_ug_m3": 8.55,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.43,
      "regional_daily_mean_ug_m3": 5.51,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.7,
      "regional_daily_mean_ug_m3": 2.75,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.86,
      "regional_daily_mean_ug_m3": 10.93,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.66,
      "regional_daily_mean_ug_m3": 9.52,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.87,
      "regional_daily_mean_ug_m3": 3.0,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.07,
      "regional_daily_mean_ug_m3": 6.53,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.97,
      "regional_daily_mean_ug_m3": 6.01,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.77,
      "regional_daily_mean_ug_m3": 3.44,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.94,
      "regional_daily_mean_ug_m3": 7.69,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.03,
      "regional_daily_mean_ug_m3": 8.36,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.77,
      "regional_daily_mean_ug_m3": 4.1,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.33,
      "regional_daily_mean_ug_m3": 7.87,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.57,
      "regional_daily_mean_ug_m3": 7.92,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.98,
      "regional_daily_mean_ug_m3": 3.33,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.28,
      "regional_daily_mean_ug_m3": 5.6,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.79,
      "regional_daily_mean_ug_m3": 9.03,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.65,
      "regional_daily_mean_ug_m3": 4.22,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.91,
      "regional_daily_mean_ug_m3": 8.66,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.42,
      "regional_daily_mean_ug_m3": 5.72,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.3,
      "regional_daily_mean_ug_m3": 2.5,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.18,
      "regional_daily_mean_ug_m3": 8.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.3,
      "regional_daily_mean_ug_m3": 7.64,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-08-31",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.47,
      "regional_daily_mean_ug_m3": 3.71,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.13,
      "regional_daily_mean_ug_m3": 14.24,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.9,
      "regional_daily_mean_ug_m3": 7.4,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.24,
      "regional_daily_mean_ug_m3": 3.79,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.64,
      "regional_daily_mean_ug_m3": 16.22,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.19,
      "regional_daily_mean_ug_m3": 7.22,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.13,
      "regional_daily_mean_ug_m3": 3.18,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.09,
      "regional_daily_mean_ug_m3": 18.85,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.85,
      "regional_daily_mean_ug_m3": 8.76,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.57,
      "regional_daily_mean_ug_m3": 3.57,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.44,
      "regional_daily_mean_ug_m3": 6.1,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.39,
      "regional_daily_mean_ug_m3": 6.51,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.83,
      "regional_daily_mean_ug_m3": 3.29,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.24,
      "regional_daily_mean_ug_m3": 10.63,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.59,
      "regional_daily_mean_ug_m3": 9.26,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.72,
      "regional_daily_mean_ug_m3": 3.9,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.97,
      "regional_daily_mean_ug_m3": 14.94,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.86,
      "regional_daily_mean_ug_m3": 9.35,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.47,
      "regional_daily_mean_ug_m3": 3.86,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.68,
      "regional_daily_mean_ug_m3": 11.98,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.69,
      "regional_daily_mean_ug_m3": 9.4,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.38,
      "regional_daily_mean_ug_m3": 4.08,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.14,
      "regional_daily_mean_ug_m3": 11.57,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.4,
      "regional_daily_mean_ug_m3": 7.76,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.29,
      "regional_daily_mean_ug_m3": 3.44,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.81,
      "regional_daily_mean_ug_m3": 12.67,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.03,
      "regional_daily_mean_ug_m3": 9.12,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-01",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.32,
      "regional_daily_mean_ug_m3": 3.54,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.05,
      "regional_daily_mean_ug_m3": 13.71,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.16,
      "regional_daily_mean_ug_m3": 6.22,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.42,
      "regional_daily_mean_ug_m3": 3.92,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.21,
      "regional_daily_mean_ug_m3": 10.03,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.03,
      "regional_daily_mean_ug_m3": 6.54,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.07,
      "regional_daily_mean_ug_m3": 3.19,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 15.63,
      "regional_daily_mean_ug_m3": 16.31,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.53,
      "regional_daily_mean_ug_m3": 9.39,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.83,
      "regional_daily_mean_ug_m3": 3.86,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.82,
      "regional_daily_mean_ug_m3": 9.54,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.48,
      "regional_daily_mean_ug_m3": 6.69,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.48,
      "regional_daily_mean_ug_m3": 3.57,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.71,
      "regional_daily_mean_ug_m3": 12.13,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.53,
      "regional_daily_mean_ug_m3": 7.05,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.49,
      "regional_daily_mean_ug_m3": 3.64,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.11,
      "regional_daily_mean_ug_m3": 12.27,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.39,
      "regional_daily_mean_ug_m3": 8.85,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.89,
      "regional_daily_mean_ug_m3": 3.94,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.05,
      "regional_daily_mean_ug_m3": 7.6,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.01,
      "regional_daily_mean_ug_m3": 6.64,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.82,
      "regional_daily_mean_ug_m3": 2.77,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.62,
      "regional_daily_mean_ug_m3": 12.76,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.6,
      "regional_daily_mean_ug_m3": 6.07,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.92,
      "regional_daily_mean_ug_m3": 3.14,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.12,
      "regional_daily_mean_ug_m3": 13.96,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.67,
      "regional_daily_mean_ug_m3": 8.24,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-02",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.94,
      "regional_daily_mean_ug_m3": 3.98,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.28,
      "regional_daily_mean_ug_m3": 10.27,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.29,
      "regional_daily_mean_ug_m3": 7.54,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.81,
      "regional_daily_mean_ug_m3": 3.94,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.38,
      "regional_daily_mean_ug_m3": 7.18,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.78,
      "regional_daily_mean_ug_m3": 5.88,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.9,
      "regional_daily_mean_ug_m3": 2.88,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.01,
      "regional_daily_mean_ug_m3": 9.58,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.34,
      "regional_daily_mean_ug_m3": 5.79,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.19,
      "regional_daily_mean_ug_m3": 2.4,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.03,
      "regional_daily_mean_ug_m3": 8.28,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.54,
      "regional_daily_mean_ug_m3": 5.86,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.6,
      "regional_daily_mean_ug_m3": 2.81,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.3,
      "regional_daily_mean_ug_m3": 8.16,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.04,
      "regional_daily_mean_ug_m3": 9.89,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.69,
      "regional_daily_mean_ug_m3": 5.04,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.49,
      "regional_daily_mean_ug_m3": 7.24,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.36,
      "regional_daily_mean_ug_m3": 6.89,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.96,
      "regional_daily_mean_ug_m3": 2.95,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.33,
      "regional_daily_mean_ug_m3": 5.61,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.2,
      "regional_daily_mean_ug_m3": 5.74,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.67,
      "regional_daily_mean_ug_m3": 2.41,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.34,
      "regional_daily_mean_ug_m3": 7.24,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.66,
      "regional_daily_mean_ug_m3": 7.91,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.09,
      "regional_daily_mean_ug_m3": 4.06,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.28,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.07,
      "regional_daily_mean_ug_m3": 8.48,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-03",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.92,
      "regional_daily_mean_ug_m3": 4.06,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.7,
      "regional_daily_mean_ug_m3": 9.35,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.21,
      "regional_daily_mean_ug_m3": 7.32,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.16,
      "regional_daily_mean_ug_m3": 3.32,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.01,
      "regional_daily_mean_ug_m3": 9.02,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.64,
      "regional_daily_mean_ug_m3": 5.82,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.59,
      "regional_daily_mean_ug_m3": 2.67,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.99,
      "regional_daily_mean_ug_m3": 10.81,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.45,
      "regional_daily_mean_ug_m3": 7.2,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.99,
      "regional_daily_mean_ug_m3": 2.99,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.82,
      "regional_daily_mean_ug_m3": 6.61,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.13,
      "regional_daily_mean_ug_m3": 8.35,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.08,
      "regional_daily_mean_ug_m3": 3.43,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.79,
      "regional_daily_mean_ug_m3": 6.57,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.23,
      "regional_daily_mean_ug_m3": 11.01,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.45,
      "regional_daily_mean_ug_m3": 4.79,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.93,
      "regional_daily_mean_ug_m3": 10.55,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.58,
      "regional_daily_mean_ug_m3": 8.02,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.23,
      "regional_daily_mean_ug_m3": 3.33,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.38,
      "regional_daily_mean_ug_m3": 7.37,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.59,
      "regional_daily_mean_ug_m3": 10.61,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.94,
      "regional_daily_mean_ug_m3": 3.88,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 6.12,
      "regional_daily_mean_ug_m3": 8.05,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.08,
      "regional_daily_mean_ug_m3": 7.47,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.16,
      "regional_daily_mean_ug_m3": 3.34,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.23,
      "regional_daily_mean_ug_m3": 8.63,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.17,
      "regional_daily_mean_ug_m3": 9.82,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-04",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.93,
      "regional_daily_mean_ug_m3": 4.04,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.45,
      "regional_daily_mean_ug_m3": 15.02,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.37,
      "regional_daily_mean_ug_m3": 8.81,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.63,
      "regional_daily_mean_ug_m3": 4.65,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.27,
      "regional_daily_mean_ug_m3": 16.92,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.77,
      "regional_daily_mean_ug_m3": 9.37,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.38,
      "regional_daily_mean_ug_m3": 5.3,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.92,
      "regional_daily_mean_ug_m3": 14.36,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.72,
      "regional_daily_mean_ug_m3": 10.81,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.06,
      "regional_daily_mean_ug_m3": 5.19,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 3.69,
      "regional_daily_mean_ug_m3": 6.51,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.89,
      "regional_daily_mean_ug_m3": 7.37,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.18,
      "regional_daily_mean_ug_m3": 3.62,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.25,
      "regional_daily_mean_ug_m3": 9.51,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.79,
      "regional_daily_mean_ug_m3": 10.36,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.23,
      "regional_daily_mean_ug_m3": 4.62,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.28,
      "regional_daily_mean_ug_m3": 13.09,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.4,
      "regional_daily_mean_ug_m3": 12.16,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.48,
      "regional_daily_mean_ug_m3": 5.65,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.18,
      "regional_daily_mean_ug_m3": 11.63,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 12.1,
      "regional_daily_mean_ug_m3": 14.19,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.57,
      "regional_daily_mean_ug_m3": 5.74,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.09,
      "regional_daily_mean_ug_m3": 13.23,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.68,
      "regional_daily_mean_ug_m3": 8.86,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.44,
      "regional_daily_mean_ug_m3": 4.41,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.45,
      "regional_daily_mean_ug_m3": 11.79,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.9,
      "regional_daily_mean_ug_m3": 9.59,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-05",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.27,
      "regional_daily_mean_ug_m3": 4.48,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.47,
      "regional_daily_mean_ug_m3": 16.02,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.77,
      "regional_daily_mean_ug_m3": 10.62,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.91,
      "regional_daily_mean_ug_m3": 5.79,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.22,
      "regional_daily_mean_ug_m3": 11.94,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.66,
      "regional_daily_mean_ug_m3": 10.7,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.49,
      "regional_daily_mean_ug_m3": 5.41,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.32,
      "regional_daily_mean_ug_m3": 23.63,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.58,
      "regional_daily_mean_ug_m3": 12.18,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.72,
      "regional_daily_mean_ug_m3": 5.77,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 8.73,
      "regional_daily_mean_ug_m3": 11.33,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.37,
      "regional_daily_mean_ug_m3": 9.15,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.34,
      "regional_daily_mean_ug_m3": 5.18,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.52,
      "regional_daily_mean_ug_m3": 11.52,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.98,
      "regional_daily_mean_ug_m3": 10.91,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.46,
      "regional_daily_mean_ug_m3": 5.74,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.03,
      "regional_daily_mean_ug_m3": 15.26,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.95,
      "regional_daily_mean_ug_m3": 12.96,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.71,
      "regional_daily_mean_ug_m3": 5.9,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.94,
      "regional_daily_mean_ug_m3": 11.64,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.72,
      "regional_daily_mean_ug_m3": 12.68,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.44,
      "regional_daily_mean_ug_m3": 5.49,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.14,
      "regional_daily_mean_ug_m3": 14.09,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.18,
      "regional_daily_mean_ug_m3": 10.74,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 5.28,
      "regional_daily_mean_ug_m3": 5.59,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.45,
      "regional_daily_mean_ug_m3": 17.15,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 13.07,
      "regional_daily_mean_ug_m3": 12.53,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-06",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 6.39,
      "regional_daily_mean_ug_m3": 6.68,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.71,
      "regional_daily_mean_ug_m3": 12.24,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.83,
      "regional_daily_mean_ug_m3": 8.17,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.76,
      "regional_daily_mean_ug_m3": 3.87,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.09,
      "regional_daily_mean_ug_m3": 12.31,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.13,
      "regional_daily_mean_ug_m3": 8.2,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.68,
      "regional_daily_mean_ug_m3": 3.62,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.09,
      "regional_daily_mean_ug_m3": 17.69,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.86,
      "regional_daily_mean_ug_m3": 10.87,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.78,
      "regional_daily_mean_ug_m3": 4.01,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 4.45,
      "regional_daily_mean_ug_m3": 7.67,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.32,
      "regional_daily_mean_ug_m3": 6.76,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.78,
      "regional_daily_mean_ug_m3": 3.16,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.66,
      "regional_daily_mean_ug_m3": 8.58,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.82,
      "regional_daily_mean_ug_m3": 9.04,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.68,
      "regional_daily_mean_ug_m3": 4.08,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.34,
      "regional_daily_mean_ug_m3": 12.92,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.4,
      "regional_daily_mean_ug_m3": 10.39,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.17,
      "regional_daily_mean_ug_m3": 4.34,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 5.97,
      "regional_daily_mean_ug_m3": 7.48,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.43,
      "regional_daily_mean_ug_m3": 9.89,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.17,
      "regional_daily_mean_ug_m3": 3.68,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.63,
      "regional_daily_mean_ug_m3": 10.32,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.99,
      "regional_daily_mean_ug_m3": 8.1,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.84,
      "regional_daily_mean_ug_m3": 3.8,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.57,
      "regional_daily_mean_ug_m3": 10.97,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.14,
      "regional_daily_mean_ug_m3": 8.74,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-07",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.67,
      "regional_daily_mean_ug_m3": 3.89,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.9,
      "regional_daily_mean_ug_m3": 11.79,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.71,
      "regional_daily_mean_ug_m3": 6.74,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.09,
      "regional_daily_mean_ug_m3": 3.17,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 17.9,
      "regional_daily_mean_ug_m3": 15.05,
      "contributing_stations": 3,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.7,
      "regional_daily_mean_ug_m3": 5.93,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.98,
      "regional_daily_mean_ug_m3": 3.15,
      "contributing_stations": 6,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 18.3,
      "regional_daily_mean_ug_m3": 17.09,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.72,
      "regional_daily_mean_ug_m3": 7.99,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.38,
      "regional_daily_mean_ug_m3": 3.65,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 3.63,
      "regional_daily_mean_ug_m3": 6.05,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.73,
      "regional_daily_mean_ug_m3": 8.34,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.34,
      "regional_daily_mean_ug_m3": 3.62,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.29,
      "regional_daily_mean_ug_m3": 7.86,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 11.04,
      "regional_daily_mean_ug_m3": 10.71,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.28,
      "regional_daily_mean_ug_m3": 4.53,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.62,
      "regional_daily_mean_ug_m3": 12.72,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.26,
      "regional_daily_mean_ug_m3": 8.07,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.25,
      "regional_daily_mean_ug_m3": 3.66,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.06,
      "regional_daily_mean_ug_m3": 10.36,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.37,
      "regional_daily_mean_ug_m3": 8.23,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.22,
      "regional_daily_mean_ug_m3": 3.06,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 7.87,
      "regional_daily_mean_ug_m3": 10.37,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 5.95,
      "regional_daily_mean_ug_m3": 6.19,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.85,
      "regional_daily_mean_ug_m3": 2.93,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.59,
      "regional_daily_mean_ug_m3": 9.91,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.05,
      "regional_daily_mean_ug_m3": 9.18,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-08",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.67,
      "regional_daily_mean_ug_m3": 4.0,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 19.68,
      "regional_daily_mean_ug_m3": 18.18,
      "contributing_stations": 9,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.63,
      "regional_daily_mean_ug_m3": 8.13,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.09,
      "regional_daily_mean_ug_m3": 4.08,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 20.73,
      "regional_daily_mean_ug_m3": 18.41,
      "contributing_stations": 3,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.13,
      "regional_daily_mean_ug_m3": 7.18,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.53,
      "regional_daily_mean_ug_m3": 3.53,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.92,
      "regional_daily_mean_ug_m3": 21.68,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.42,
      "regional_daily_mean_ug_m3": 7.24,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.25,
      "regional_daily_mean_ug_m3": 3.37,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.1,
      "regional_daily_mean_ug_m3": 12.75,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.37,
      "regional_daily_mean_ug_m3": 8.28,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 2.5,
      "regional_daily_mean_ug_m3": 3.21,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.1,
      "regional_daily_mean_ug_m3": 13.44,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.81,
      "regional_daily_mean_ug_m3": 10.19,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.4,
      "regional_daily_mean_ug_m3": 4.57,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.87,
      "regional_daily_mean_ug_m3": 13.67,
      "contributing_stations": 13,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 6.84,
      "regional_daily_mean_ug_m3": 8.05,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.28,
      "regional_daily_mean_ug_m3": 3.48,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.25,
      "regional_daily_mean_ug_m3": 13.1,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 9.97,
      "regional_daily_mean_ug_m3": 11.35,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.79,
      "regional_daily_mean_ug_m3": 3.97,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.33,
      "regional_daily_mean_ug_m3": 14.14,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.3,
      "regional_daily_mean_ug_m3": 8.42,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.99,
      "regional_daily_mean_ug_m3": 4.0,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 10.89,
      "regional_daily_mean_ug_m3": 12.35,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.55,
      "regional_daily_mean_ug_m3": 7.97,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-09",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.04,
      "regional_daily_mean_ug_m3": 3.42,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "East Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 14.87,
      "regional_daily_mean_ug_m3": 15.35,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "East Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.81,
      "regional_daily_mean_ug_m3": 8.8,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.15,
      "regional_daily_mean_ug_m3": 4.11,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "East of England",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 13.89,
      "regional_daily_mean_ug_m3": 13.09,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "East of England",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.38,
      "regional_daily_mean_ug_m3": 7.32,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "East of England",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.55,
      "regional_daily_mean_ug_m3": 3.55,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "London",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 21.44,
      "regional_daily_mean_ug_m3": 22.3,
      "contributing_stations": 4,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "London",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.61,
      "regional_daily_mean_ug_m3": 9.77,
      "contributing_stations": 5,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "London",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.81,
      "regional_daily_mean_ug_m3": 3.91,
      "contributing_stations": 7,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "North East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 9.44,
      "regional_daily_mean_ug_m3": 12.17,
      "contributing_stations": 8,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "North East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.7,
      "regional_daily_mean_ug_m3": 8.93,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "North East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.49,
      "regional_daily_mean_ug_m3": 3.77,
      "contributing_stations": 12,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "North West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.57,
      "regional_daily_mean_ug_m3": 13.94,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "North West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.36,
      "regional_daily_mean_ug_m3": 8.88,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "North West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.16,
      "regional_daily_mean_ug_m3": 4.77,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "South East",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 12.87,
      "regional_daily_mean_ug_m3": 13.53,
      "contributing_stations": 11,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "South East",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.83,
      "regional_daily_mean_ug_m3": 8.89,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "South East",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.42,
      "regional_daily_mean_ug_m3": 3.72,
      "contributing_stations": 17,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "South West",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.71,
      "regional_daily_mean_ug_m3": 13.37,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "South West",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 8.55,
      "regional_daily_mean_ug_m3": 8.78,
      "contributing_stations": 10,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "South West",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.65,
      "regional_daily_mean_ug_m3": 3.49,
      "contributing_stations": 14,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "West Midlands",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 11.25,
      "regional_daily_mean_ug_m3": 15.08,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "West Midlands",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 7.77,
      "regional_daily_mean_ug_m3": 8.78,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 3.69,
      "regional_daily_mean_ug_m3": 3.78,
      "contributing_stations": 19,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "regional_daily_median_ug_m3": 16.81,
      "regional_daily_mean_ug_m3": 16.85,
      "contributing_stations": 15,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "regional_daily_median_ug_m3": 10.32,
      "regional_daily_mean_ug_m3": 10.22,
      "contributing_stations": 16,
      "regional_comparison_eligible": true
    },
    {
      "date": "2026-09-10",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "regional_daily_median_ug_m3": 4.43,
      "regional_daily_mean_ug_m3": 4.38,
      "contributing_stations": 18,
      "regional_comparison_eligible": true
    }
  ],
  "daily_national_statistics": [
    {
      "date": "2026-08-12",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 14.61,
      "national_station_mean_ug_m3": 17.97,
      "reporting_stations": 90,
      "reporting_regions": 9,
      "station_days_above_who_reference": 18
    },
    {
      "date": "2026-08-12",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 20.39,
      "national_station_mean_ug_m3": 20.93,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-12",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.7,
      "national_station_mean_ug_m3": 7.24,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-08-13",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 20.96,
      "national_station_mean_ug_m3": 22.39,
      "reporting_stations": 86,
      "reporting_regions": 9,
      "station_days_above_who_reference": 28
    },
    {
      "date": "2026-08-13",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 23.69,
      "national_station_mean_ug_m3": 23.78,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-08-13",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 8.25,
      "national_station_mean_ug_m3": 8.55,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-14",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.16,
      "national_station_mean_ug_m3": 12.04,
      "reporting_stations": 87,
      "reporting_regions": 9,
      "station_days_above_who_reference": 7
    },
    {
      "date": "2026-08-14",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 11.18,
      "national_station_mean_ug_m3": 13.94,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-14",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.88,
      "national_station_mean_ug_m3": 6.38,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-08-15",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.25,
      "national_station_mean_ug_m3": 8.44,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-08-15",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.02,
      "national_station_mean_ug_m3": 8.07,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-15",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 2.91,
      "national_station_mean_ug_m3": 3.5,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-16",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 8.53,
      "national_station_mean_ug_m3": 10.14,
      "reporting_stations": 92,
      "reporting_regions": 9,
      "station_days_above_who_reference": 2
    },
    {
      "date": "2026-08-16",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.61,
      "national_station_mean_ug_m3": 9.13,
      "reporting_stations": 102,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-16",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.99,
      "national_station_mean_ug_m3": 4.21,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-17",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 10.32,
      "national_station_mean_ug_m3": 11.09,
      "reporting_stations": 87,
      "reporting_regions": 9,
      "station_days_above_who_reference": 6
    },
    {
      "date": "2026-08-17",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 9.21,
      "national_station_mean_ug_m3": 9.85,
      "reporting_stations": 102,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-17",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.29,
      "national_station_mean_ug_m3": 4.72,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-18",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.35,
      "national_station_mean_ug_m3": 8.9,
      "reporting_stations": 84,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-08-18",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.26,
      "national_station_mean_ug_m3": 8.52,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-18",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.98,
      "national_station_mean_ug_m3": 3.96,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-19",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.47,
      "national_station_mean_ug_m3": 11.57,
      "reporting_stations": 89,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-08-19",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.08,
      "national_station_mean_ug_m3": 7.72,
      "reporting_stations": 101,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-08-19",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.26,
      "national_station_mean_ug_m3": 3.79,
      "reporting_stations": 120,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-08-20",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.64,
      "national_station_mean_ug_m3": 11.2,
      "reporting_stations": 88,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-20",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.38,
      "national_station_mean_ug_m3": 7.8,
      "reporting_stations": 102,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-20",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.51,
      "national_station_mean_ug_m3": 3.77,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-21",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 10.91,
      "national_station_mean_ug_m3": 12.3,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 4
    },
    {
      "date": "2026-08-21",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.67,
      "national_station_mean_ug_m3": 8.12,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-21",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.46,
      "national_station_mean_ug_m3": 3.64,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-22",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 12.52,
      "national_station_mean_ug_m3": 13.38,
      "reporting_stations": 92,
      "reporting_regions": 9,
      "station_days_above_who_reference": 5
    },
    {
      "date": "2026-08-22",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.83,
      "national_station_mean_ug_m3": 9.8,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-22",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.98,
      "national_station_mean_ug_m3": 5.57,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-08-23",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.42,
      "national_station_mean_ug_m3": 12.96,
      "reporting_stations": 92,
      "reporting_regions": 9,
      "station_days_above_who_reference": 6
    },
    {
      "date": "2026-08-23",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 12.82,
      "national_station_mean_ug_m3": 13.32,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-23",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 8.4,
      "national_station_mean_ug_m3": 8.62,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-24",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 10.82,
      "national_station_mean_ug_m3": 12.07,
      "reporting_stations": 92,
      "reporting_regions": 9,
      "station_days_above_who_reference": 5
    },
    {
      "date": "2026-08-24",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 11.93,
      "national_station_mean_ug_m3": 12.54,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-24",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 6.19,
      "national_station_mean_ug_m3": 6.41,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-25",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 8.67,
      "national_station_mean_ug_m3": 10.89,
      "reporting_stations": 90,
      "reporting_regions": 9,
      "station_days_above_who_reference": 5
    },
    {
      "date": "2026-08-25",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 14.42,
      "national_station_mean_ug_m3": 14.81,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-25",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.97,
      "national_station_mean_ug_m3": 6.3,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-26",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 12.69,
      "national_station_mean_ug_m3": 14.69,
      "reporting_stations": 87,
      "reporting_regions": 9,
      "station_days_above_who_reference": 7
    },
    {
      "date": "2026-08-26",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 20.09,
      "national_station_mean_ug_m3": 20.29,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-26",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 11.51,
      "national_station_mean_ug_m3": 11.33,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 5
    },
    {
      "date": "2026-08-27",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 15.77,
      "national_station_mean_ug_m3": 17.5,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 18
    },
    {
      "date": "2026-08-27",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 17.59,
      "national_station_mean_ug_m3": 17.04,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-27",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 11.81,
      "national_station_mean_ug_m3": 11.17,
      "reporting_stations": 120,
      "reporting_regions": 9,
      "station_days_above_who_reference": 14
    },
    {
      "date": "2026-08-28",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.18,
      "national_station_mean_ug_m3": 12.6,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 7
    },
    {
      "date": "2026-08-28",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 10.47,
      "national_station_mean_ug_m3": 10.98,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-28",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.29,
      "national_station_mean_ug_m3": 6.11,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-29",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 10.53,
      "national_station_mean_ug_m3": 12.01,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 5
    },
    {
      "date": "2026-08-29",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.62,
      "national_station_mean_ug_m3": 8.95,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-29",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.99,
      "national_station_mean_ug_m3": 5.29,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-30",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.63,
      "national_station_mean_ug_m3": 8.99,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 2
    },
    {
      "date": "2026-08-30",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.78,
      "national_station_mean_ug_m3": 8.15,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-30",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.01,
      "national_station_mean_ug_m3": 4.2,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-31",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.16,
      "national_station_mean_ug_m3": 7.86,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-31",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.89,
      "national_station_mean_ug_m3": 7.31,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-08-31",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.22,
      "national_station_mean_ug_m3": 3.42,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-01",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 10.98,
      "national_station_mean_ug_m3": 12.56,
      "reporting_stations": 88,
      "reporting_regions": 9,
      "station_days_above_who_reference": 1
    },
    {
      "date": "2026-09-01",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.9,
      "national_station_mean_ug_m3": 8.46,
      "reporting_stations": 103,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-01",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.41,
      "national_station_mean_ug_m3": 3.67,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-02",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 11.72,
      "national_station_mean_ug_m3": 12.21,
      "reporting_stations": 88,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-09-02",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 6.53,
      "national_station_mean_ug_m3": 7.27,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-02",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.39,
      "national_station_mean_ug_m3": 3.57,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-03",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 7.42,
      "national_station_mean_ug_m3": 8.19,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-03",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.4,
      "national_station_mean_ug_m3": 7.49,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-03",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.64,
      "national_station_mean_ug_m3": 3.57,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-04",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 6.63,
      "national_station_mean_ug_m3": 8.36,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-04",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.93,
      "national_station_mean_ug_m3": 8.71,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-04",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.44,
      "national_station_mean_ug_m3": 3.67,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-05",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 10.86,
      "national_station_mean_ug_m3": 12.06,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 3
    },
    {
      "date": "2026-09-05",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 9.69,
      "national_station_mean_ug_m3": 10.17,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-05",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 4.65,
      "national_station_mean_ug_m3": 4.82,
      "reporting_stations": 123,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-06",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 12.34,
      "national_station_mean_ug_m3": 14.33,
      "reporting_stations": 94,
      "reporting_regions": 9,
      "station_days_above_who_reference": 7
    },
    {
      "date": "2026-09-06",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 10.98,
      "national_station_mean_ug_m3": 11.47,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-06",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 5.61,
      "national_station_mean_ug_m3": 5.79,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-07",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 9.62,
      "national_station_mean_ug_m3": 10.57,
      "reporting_stations": 92,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-07",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.41,
      "national_station_mean_ug_m3": 8.86,
      "reporting_stations": 104,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-07",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.79,
      "national_station_mean_ug_m3": 3.86,
      "reporting_stations": 122,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-08",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 8.06,
      "national_station_mean_ug_m3": 10.45,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-08",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 7.39,
      "national_station_mean_ug_m3": 8.11,
      "reporting_stations": 106,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-08",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.38,
      "national_station_mean_ug_m3": 3.59,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-09",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 13.98,
      "national_station_mean_ug_m3": 14.3,
      "reporting_stations": 93,
      "reporting_regions": 9,
      "station_days_above_who_reference": 8
    },
    {
      "date": "2026-09-09",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.0,
      "national_station_mean_ug_m3": 8.68,
      "reporting_stations": 105,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-09",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.74,
      "national_station_mean_ug_m3": 3.79,
      "reporting_stations": 124,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-10",
      "pollutant": "NO2",
      "national_station_median_ug_m3": 13.47,
      "national_station_mean_ug_m3": 14.81,
      "reporting_stations": 91,
      "reporting_regions": 9,
      "station_days_above_who_reference": 8
    },
    {
      "date": "2026-09-10",
      "pollutant": "PM10",
      "national_station_median_ug_m3": 8.31,
      "national_station_mean_ug_m3": 9.04,
      "reporting_stations": 102,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    },
    {
      "date": "2026-09-10",
      "pollutant": "PM2.5",
      "national_station_median_ug_m3": 3.71,
      "national_station_mean_ug_m3": 4.0,
      "reporting_stations": 121,
      "reporting_regions": 9,
      "station_days_above_who_reference": 0
    }
  ],
  "fixed_panel_statistics": [
    {
      "date": "2026-08-12",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 14.59,
      "fixed_panel_mean_ug_m3": 18.12,
      "fixed_panel_stations": 83,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-12",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 20.11,
      "fixed_panel_mean_ug_m3": 20.78,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-12",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.61,
      "fixed_panel_mean_ug_m3": 7.22,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-13",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 21.16,
      "fixed_panel_mean_ug_m3": 22.48,
      "fixed_panel_stations": 80,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-13",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 23.36,
      "fixed_panel_mean_ug_m3": 23.56,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-13",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 8.16,
      "fixed_panel_mean_ug_m3": 8.48,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-14",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.36,
      "fixed_panel_mean_ug_m3": 11.78,
      "fixed_panel_stations": 82,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-14",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.3,
      "fixed_panel_mean_ug_m3": 13.97,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-14",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.79,
      "fixed_panel_mean_ug_m3": 6.36,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-15",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.25,
      "fixed_panel_mean_ug_m3": 8.37,
      "fixed_panel_stations": 85,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-15",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.13,
      "fixed_panel_mean_ug_m3": 8.09,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-15",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 2.83,
      "fixed_panel_mean_ug_m3": 3.49,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-16",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 8.74,
      "fixed_panel_mean_ug_m3": 10.17,
      "fixed_panel_stations": 86,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-16",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.61,
      "fixed_panel_mean_ug_m3": 9.14,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-16",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.97,
      "fixed_panel_mean_ug_m3": 4.18,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-17",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 10.32,
      "fixed_panel_mean_ug_m3": 11.0,
      "fixed_panel_stations": 81,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-17",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 9.2,
      "fixed_panel_mean_ug_m3": 9.83,
      "fixed_panel_stations": 97,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-17",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.18,
      "fixed_panel_mean_ug_m3": 4.65,
      "fixed_panel_stations": 113,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-18",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.5,
      "fixed_panel_mean_ug_m3": 8.97,
      "fixed_panel_stations": 79,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-18",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.31,
      "fixed_panel_mean_ug_m3": 8.64,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-18",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.98,
      "fixed_panel_mean_ug_m3": 3.97,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-19",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.39,
      "fixed_panel_mean_ug_m3": 11.58,
      "fixed_panel_stations": 84,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-19",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.09,
      "fixed_panel_mean_ug_m3": 7.77,
      "fixed_panel_stations": 97,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-19",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.25,
      "fixed_panel_mean_ug_m3": 3.77,
      "fixed_panel_stations": 113,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-20",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.69,
      "fixed_panel_mean_ug_m3": 11.27,
      "fixed_panel_stations": 85,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-20",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.34,
      "fixed_panel_mean_ug_m3": 7.71,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-20",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.48,
      "fixed_panel_mean_ug_m3": 3.7,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-21",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.06,
      "fixed_panel_mean_ug_m3": 12.43,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-21",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.67,
      "fixed_panel_mean_ug_m3": 8.05,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-21",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.33,
      "fixed_panel_mean_ug_m3": 3.6,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-22",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 12.83,
      "fixed_panel_mean_ug_m3": 13.5,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-22",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.78,
      "fixed_panel_mean_ug_m3": 9.68,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-22",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.83,
      "fixed_panel_mean_ug_m3": 5.47,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-23",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.49,
      "fixed_panel_mean_ug_m3": 13.12,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-23",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 12.68,
      "fixed_panel_mean_ug_m3": 13.31,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-23",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 8.4,
      "fixed_panel_mean_ug_m3": 8.62,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-24",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 10.93,
      "fixed_panel_mean_ug_m3": 12.14,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-24",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 11.93,
      "fixed_panel_mean_ug_m3": 12.55,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-24",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 6.22,
      "fixed_panel_mean_ug_m3": 6.42,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-25",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 8.63,
      "fixed_panel_mean_ug_m3": 10.94,
      "fixed_panel_stations": 84,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-25",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 14.27,
      "fixed_panel_mean_ug_m3": 14.66,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-25",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.97,
      "fixed_panel_mean_ug_m3": 6.24,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-26",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 12.58,
      "fixed_panel_mean_ug_m3": 14.6,
      "fixed_panel_stations": 82,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-26",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 20.03,
      "fixed_panel_mean_ug_m3": 20.1,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-26",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 11.52,
      "fixed_panel_mean_ug_m3": 11.24,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-27",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 15.71,
      "fixed_panel_mean_ug_m3": 17.43,
      "fixed_panel_stations": 85,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-27",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 17.46,
      "fixed_panel_mean_ug_m3": 16.82,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-27",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 11.81,
      "fixed_panel_mean_ug_m3": 11.08,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-28",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.49,
      "fixed_panel_mean_ug_m3": 12.61,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-28",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 10.27,
      "fixed_panel_mean_ug_m3": 10.89,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-28",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.91,
      "fixed_panel_mean_ug_m3": 6.03,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-29",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 10.7,
      "fixed_panel_mean_ug_m3": 11.91,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-29",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.62,
      "fixed_panel_mean_ug_m3": 8.86,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-29",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.97,
      "fixed_panel_mean_ug_m3": 5.19,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-30",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.41,
      "fixed_panel_mean_ug_m3": 8.98,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-30",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.78,
      "fixed_panel_mean_ug_m3": 8.21,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-30",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.96,
      "fixed_panel_mean_ug_m3": 4.16,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-31",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.14,
      "fixed_panel_mean_ug_m3": 7.86,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-31",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.89,
      "fixed_panel_mean_ug_m3": 7.28,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-08-31",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.17,
      "fixed_panel_mean_ug_m3": 3.32,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-01",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 10.98,
      "fixed_panel_mean_ug_m3": 12.48,
      "fixed_panel_stations": 82,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-01",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.9,
      "fixed_panel_mean_ug_m3": 8.32,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-01",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.36,
      "fixed_panel_mean_ug_m3": 3.57,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-02",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.07,
      "fixed_panel_mean_ug_m3": 12.01,
      "fixed_panel_stations": 82,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-02",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 6.46,
      "fixed_panel_mean_ug_m3": 7.14,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-02",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.38,
      "fixed_panel_mean_ug_m3": 3.53,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-03",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 7.1,
      "fixed_panel_mean_ug_m3": 8.17,
      "fixed_panel_stations": 84,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-03",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.29,
      "fixed_panel_mean_ug_m3": 7.42,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-03",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.65,
      "fixed_panel_mean_ug_m3": 3.57,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-04",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 6.67,
      "fixed_panel_mean_ug_m3": 8.41,
      "fixed_panel_stations": 84,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-04",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.85,
      "fixed_panel_mean_ug_m3": 8.56,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-04",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.43,
      "fixed_panel_mean_ug_m3": 3.65,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-05",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 11.01,
      "fixed_panel_mean_ug_m3": 12.1,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-05",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 9.7,
      "fixed_panel_mean_ug_m3": 10.09,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-05",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 4.66,
      "fixed_panel_mean_ug_m3": 4.83,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-06",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 12.38,
      "fixed_panel_mean_ug_m3": 14.38,
      "fixed_panel_stations": 87,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-06",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 10.97,
      "fixed_panel_mean_ug_m3": 11.34,
      "fixed_panel_stations": 97,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-06",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 5.62,
      "fixed_panel_mean_ug_m3": 5.76,
      "fixed_panel_stations": 113,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-07",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 9.62,
      "fixed_panel_mean_ug_m3": 10.51,
      "fixed_panel_stations": 86,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-07",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.4,
      "fixed_panel_mean_ug_m3": 8.78,
      "fixed_panel_stations": 97,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-07",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.8,
      "fixed_panel_mean_ug_m3": 3.86,
      "fixed_panel_stations": 113,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-08",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 8.06,
      "fixed_panel_mean_ug_m3": 10.44,
      "fixed_panel_stations": 85,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-08",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.22,
      "fixed_panel_mean_ug_m3": 7.95,
      "fixed_panel_stations": 99,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-08",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.38,
      "fixed_panel_mean_ug_m3": 3.55,
      "fixed_panel_stations": 115,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-09",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 13.59,
      "fixed_panel_mean_ug_m3": 14.24,
      "fixed_panel_stations": 86,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-09",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 7.96,
      "fixed_panel_mean_ug_m3": 8.59,
      "fixed_panel_stations": 98,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-09",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.71,
      "fixed_panel_mean_ug_m3": 3.75,
      "fixed_panel_stations": 114,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-10",
      "pollutant": "NO2",
      "fixed_panel_median_ug_m3": 13.67,
      "fixed_panel_mean_ug_m3": 15.01,
      "fixed_panel_stations": 84,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-10",
      "pollutant": "PM10",
      "fixed_panel_median_ug_m3": 8.3,
      "fixed_panel_mean_ug_m3": 8.96,
      "fixed_panel_stations": 95,
      "fixed_panel_regions": 9
    },
    {
      "date": "2026-09-10",
      "pollutant": "PM2.5",
      "fixed_panel_median_ug_m3": 3.7,
      "fixed_panel_mean_ug_m3": 3.93,
      "fixed_panel_stations": 111,
      "fixed_panel_regions": 9
    }
  ],
  "configured_stream_contract": [
    {
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ASHC",
      "uka_id": "UKA01118",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DARF",
      "uka_id": "UKA01155",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HSAW",
      "uka_id": "UKA00645",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MID",
      "uka_id": "UKA00220",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MID",
      "uka_id": "UKA00220",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MID",
      "uka_id": "UKA00220",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NEWC",
      "uka_id": "UKA00213",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NCA3",
      "uka_id": "UKA00528",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOSC",
      "uka_id": "UKA01159",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REMW",
      "uka_id": "UKA01154",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOTR",
      "uka_id": "UKA00599",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EAGL",
      "uka_id": "UKA00535",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "region": "North East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SUN2",
      "uka_id": "UKA00484",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "region": "North East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SUNR",
      "uka_id": "UKA00601",
      "region": "North East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BBRD",
      "uka_id": "UKA00625",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLAR",
      "uka_id": "UKA00590",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLAP",
      "uka_id": "UKA01025",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLC2",
      "uka_id": "UKA00488",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BLWD",
      "uka_id": "UKA01049",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BURW",
      "uka_id": "UKA00598",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CARM",
      "uka_id": "UKA00932",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COPP",
      "uka_id": "UKA00659",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LVP",
      "uka_id": "UKA00247",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LVPT",
      "uka_id": "UKA01095",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAN3",
      "uka_id": "UKA00248",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAHG",
      "uka_id": "UKA00617",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MIMW",
      "uka_id": "UKA01051",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PRES",
      "uka_id": "UKA00408",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ROCB",
      "uka_id": "UKA01174",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ECCL",
      "uka_id": "UKA00339",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CW",
      "uka_id": "UKA00579",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHLW",
      "uka_id": "UKA00627",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TAMM",
      "uka_id": "UKA01099",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WARP",
      "uka_id": "UKA01175",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WSMR",
      "uka_id": "UKA00603",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WIG5",
      "uka_id": "UKA00482",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TRAN",
      "uka_id": "UKA00406",
      "region": "North West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BAR3",
      "uka_id": "UKA00353",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BDMA",
      "uka_id": "UKA00611",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRAS",
      "uka_id": "UKA01090",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRWP",
      "uka_id": "UKA01161",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DYAG",
      "uka_id": "UKA00654",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DCST",
      "uka_id": "UKA00612",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HARW",
      "uka_id": "UKA01093",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HUL2",
      "uka_id": "UKA00450",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HULR",
      "uka_id": "UKA00600",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "IMGM",
      "uka_id": "UKA00647",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEED",
      "uka_id": "UKA00222",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LED6",
      "uka_id": "UKA00527",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "ROED",
      "uka_id": "UKA01054",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SCN2",
      "uka_id": "UKA00381",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHBR",
      "uka_id": "UKA00622",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHDG",
      "uka_id": "UKA00575",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHE",
      "uka_id": "UKA00181",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WAKA",
      "uka_id": "UKA01107",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "YK10",
      "uka_id": "UKA00523",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "YK11",
      "uka_id": "UKA00524",
      "region": "Yorkshire and the Humber",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHLG",
      "uka_id": "UKA00604",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHS7",
      "uka_id": "UKA00529",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DESA",
      "uka_id": "UKA00630",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "DESB",
      "uka_id": "UKA01027",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEIR",
      "uka_id": "UKA00609",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LECU",
      "uka_id": "UKA00573",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LIN3",
      "uka_id": "UKA00561",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LOTA",
      "uka_id": "UKA01103",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MALA",
      "uka_id": "UKA01050",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NTN4",
      "uka_id": "UKA00632",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTB",
      "uka_id": "UKA01092",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NOTK",
      "uka_id": "UKA01048",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NWBV",
      "uka_id": "UKA00618",
      "region": "East Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "region": "East Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-26",
      "period_end": "2026-09-10",
      "expected_station_days": 16
    },
    {
      "station_code": "WIGS",
      "uka_id": "UKA01176",
      "region": "East Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-26",
      "period_end": "2026-09-10",
      "expected_station_days": 16
    },
    {
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BEDC",
      "uka_id": "UKA01158",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BIRR",
      "uka_id": "UKA00626",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BIHG",
      "uka_id": "UKA01062",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BMLD",
      "uka_id": "UKA00655",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BAQF",
      "uka_id": "UKA01108",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOTR",
      "uka_id": "UKA00652",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CANK",
      "uka_id": "UKA00623",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COAL",
      "uka_id": "UKA00592",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "COBR",
      "uka_id": "UKA00634",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAM",
      "uka_id": "UKA00265",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEAR",
      "uka_id": "UKA00564",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LEOM",
      "uka_id": "UKA00489",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOLD",
      "uka_id": "UKA00595",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SHUN",
      "uka_id": "UKA01055",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STKR",
      "uka_id": "UKA00610",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STOK",
      "uka_id": "UKA00337",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TDHD",
      "uka_id": "UKA00648",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WALD",
      "uka_id": "UKA01117",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WAL4",
      "uka_id": "UKA00565",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WBKP",
      "uka_id": "UKA00658",
      "region": "West Midlands",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WOLE",
      "uka_id": "UKA01162",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "region": "West Midlands",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WORT",
      "uka_id": "UKA01098",
      "region": "West Midlands",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CAMK",
      "uka_id": "UKA01115",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CAM",
      "uka_id": "UKA00396",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LUTR",
      "uka_id": "UKA00605",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "NO12",
      "uka_id": "UKA00549",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PEGE",
      "uka_id": "UKA01052",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUS",
      "uka_id": "UKA01096",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SEND",
      "uka_id": "UKA00409",
      "region": "East of England",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STGW",
      "uka_id": "UKA01156",
      "region": "East of England",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LONC",
      "uka_id": "UKA01119",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CLL2",
      "uka_id": "UKA00211",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HRL",
      "uka_id": "UKA00472",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HIL",
      "uka_id": "UKA00266",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "LONM",
      "uka_id": "UKA01100",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "TED2",
      "uka_id": "UKA00572",
      "region": "London",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "region": "London",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HORS",
      "uka_id": "UKA00435",
      "region": "London",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "AYLA",
      "uka_id": "UKA01109",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRT3",
      "uka_id": "UKA00483",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHAT",
      "uka_id": "UKA00553",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EB",
      "uka_id": "UKA00546",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "FARC",
      "uka_id": "UKA01097",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MAID",
      "uka_id": "UKA01064",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "MKCC",
      "uka_id": "UKA00963",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "OX",
      "uka_id": "UKA00258",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "OX8",
      "uka_id": "UKA00518",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PMTH",
      "uka_id": "UKA00421",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "POAR",
      "uka_id": "UKA00651",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REA5",
      "uka_id": "UKA00620",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "REA1",
      "uka_id": "UKA00462",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "RRKL",
      "uka_id": "UKA01053",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SLOW",
      "uka_id": "UKA01091",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SA33",
      "uka_id": "UKA00613",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SOUT",
      "uka_id": "UKA00235",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "STOR",
      "uka_id": "UKA00548",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WTHG",
      "uka_id": "UKA00628",
      "region": "South East",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "region": "South East",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "WOEA",
      "uka_id": "UKA01061",
      "region": "South East",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BPLE",
      "uka_id": "UKA00574",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BHA4",
      "uka_id": "UKA00660",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BORN",
      "uka_id": "UKA00429",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BOBV",
      "uka_id": "UKA01160",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRIW",
      "uka_id": "UKA01120",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRSP",
      "uka_id": "UKA01116",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BRS8",
      "uka_id": "UKA00494",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "BR11",
      "uka_id": "UKA00631",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHGR",
      "uka_id": "UKA01101",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "CHBR",
      "uka_id": "UKA00624",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "EX",
      "uka_id": "UKA00263",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "GLOT",
      "uka_id": "UKA01102",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "HONI",
      "uka_id": "UKA00566",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYM",
      "uka_id": "UKA00360",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "PLYR",
      "uka_id": "UKA00629",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SASH",
      "uka_id": "UKA00569",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "region": "South West",
      "pollutant": "PM2.5",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "region": "South West",
      "pollutant": "PM10",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    },
    {
      "station_code": "SWHO",
      "uka_id": "UKA00650",
      "region": "South West",
      "pollutant": "NO2",
      "active_start": "2026-08-12",
      "period_end": "2026-09-10",
      "expected_station_days": 30
    }
  ],
  "data_posture": "provisional and ratified official AURN automatic measurements, status flags preserved",
  "data_status_counts": {
    "contains_provisional": 9491
  },
  "provisional_or_as_supplied_pollutant_day_observations": 9491,
  "ratified_pollutant_day_observations": 0,
  "who_context_pollutant_day_observations": 189,
  "who_context_pollutant_day_observations_by_pollutant": {
    "NO2": 160,
    "PM10": 2,
    "PM2.5": 27
  },
  "provisional_or_as_supplied_station_days": 9491,
  "ratified_station_days": 0,
  "who_context_station_days": 189,
  "who_context_station_days_by_pollutant": {
    "NO2": 160,
    "PM10": 2,
    "PM2.5": 27
  },
  "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": 9491,
    "unique_station_days": 4201,
    "expected_configured_pollutant_day_observations": 9872,
    "configured_stream_day_completeness_percent": 96.1,
    "provisional_or_as_supplied_pollutant_day_observations": 9491,
    "ratified_pollutant_day_observations": 0,
    "who_context_pollutant_day_observations": 189,
    "who_context_pollutant_day_observations_by_pollutant": {
      "NO2": 160,
      "PM10": 2,
      "PM2.5": 27
    },
    "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": "2026-09-11T12:54:09.383124+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": "2026-09-11T12:54:10.102927+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": "2026-09-11T12:54:10.856051+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": "2026-09-11T12:54:10.898256+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": "2026-09-11T12:54:10.910442+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": "2026-09-11T12:54:10.928312+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": "2026-09-11T12:54:10.945757+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": "2026-09-11T12:54:10.961594+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": "2026-09-11T12:54:11.567814+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": "2026-09-11T12:54:11.587204+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": "2026-09-11T12:54:11.600537+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": "2026-09-11T12:54:11.638916+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": "2026-09-11T12:54:11.665987+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": "2026-09-11T12:54:11.763368+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": "2026-09-11T12:54:11.825049+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": "2026-09-11T12:54:11.837177+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": "2026-09-11T12:54:11.865481+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": "2026-09-11T12:54:12.227445+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": "2026-09-11T12:54:12.242349+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": "2026-09-11T12:54:12.261039+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": "2026-09-11T12:54:12.286765+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": "2026-09-11T12:54:12.397964+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": "2026-09-11T12:54:12.424746+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": "2026-09-11T12:54:12.553051+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": "2026-09-11T12:54:12.570954+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": "2026-09-11T12:54:12.565116+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": "2026-09-11T12:54:12.976006+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": "2026-09-11T12:54:13.003581+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": "2026-09-11T12:54:12.990259+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": "2026-09-11T12:54:13.016300+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": "2026-09-11T12:54:13.143375+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": "2026-09-11T12:54:13.156269+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": "2026-09-11T12:54:13.197476+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": "2026-09-11T12:54:13.225207+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": "2026-09-11T12:54:13.278507+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": "2026-09-11T12:54:13.496369+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": "2026-09-11T12:54:13.718442+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": "2026-09-11T12:54:13.735944+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": "2026-09-11T12:54:13.753229+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": "2026-09-11T12:54:13.827628+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": "2026-09-11T12:54:13.973346+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": "2026-09-11T12:54:13.988040+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": "2026-09-11T12:54:14.193125+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": "2026-09-11T12:54:14.366502+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": "2026-09-11T12:54:14.488640+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": "2026-09-11T12:54:14.503165+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": "2026-09-11T12:54:14.644793+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": "2026-09-11T12:54:14.658798+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": "2026-09-11T12:54:14.718332+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": "2026-09-11T12:54:14.884308+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": "2026-09-11T12:54:14.902854+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": "1891d1dcc9e445ce6259d8790cc92f0b3deb0e225e05c94f806d3163d8ca2d0f",
        "byte_count": 98268,
        "retrieved_at_utc": "2026-09-11T12:54:15.085387+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": "2026-09-11T12:54:15.224575+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": "2026-09-11T12:54:15.238991+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": "2026-09-11T12:54:15.378814+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": "2026-09-11T12:54:15.391384+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": "2026-09-11T12:54:15.567859+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": "2026-09-11T12:54:15.580940+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": "2026-09-11T12:54:15.599866+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": "2026-09-11T12:54:15.808013+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": "2026-09-11T12:54:15.989884+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": "2026-09-11T12:54:16.136597+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": "2026-09-11T12:54:16.256033+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": "2026-09-11T12:54:16.272437+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": "2026-09-11T12:54:16.285049+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": "2026-09-11T12:54:16.300188+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": "2026-09-11T12:54:16.446225+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": "2026-09-11T12:54:16.827146+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": "2026-09-11T12:54:16.857951+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": "2026-09-11T12:54:16.948853+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": "2026-09-11T12:54:17.042773+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": "2026-09-11T12:54:17.145906+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": "2026-09-11T12:54:17.169490+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": "2026-09-11T12:54:17.513380+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": "2026-09-11T12:54:17.531019+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": "2026-09-11T12:54:17.599139+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": "2026-09-11T12:54:17.892757+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": "2026-09-11T12:54:17.906732+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": "2026-09-11T12:54:17.921537+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": "2026-09-11T12:54:18.241917+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": "2026-09-11T12:54:18.230320+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": "2026-09-11T12:54:18.314968+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": "2026-09-11T12:54:18.543145+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": "2026-09-11T12:54:18.579239+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": "2026-09-11T12:54:18.651281+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": "2026-09-11T12:54:18.664123+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": "2026-09-11T12:54:18.675854+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": "2026-09-11T12:54:18.744886+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": "2026-09-11T12:54:18.737852+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": "2026-09-11T12:54:18.967225+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": "2026-09-11T12:54:19.020669+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": "2026-09-11T12:54:19.015275+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": "2026-09-11T12:54:19.248947+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": "2026-09-11T12:54:19.382891+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": "2026-09-11T12:54:19.396960+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": "2026-09-11T12:54:19.438510+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": "2026-09-11T12:54:19.456386+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": "2026-09-11T12:54:19.695070+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": "2026-09-11T12:54:19.709499+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": "2026-09-11T12:54:19.949036+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": "2026-09-11T12:54:20.117401+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": "2026-09-11T12:54:20.192642+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": "2026-09-11T12:54:20.293466+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": "2026-09-11T12:54:20.426460+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": "2026-09-11T12:54:20.440797+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": "2026-09-11T12:54:20.597070+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": "2026-09-11T12:54:20.864374+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": "2026-09-11T12:54:21.010318+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": "2026-09-11T12:54:21.046888+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": "2026-09-11T12:54:21.025814+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": "2026-09-11T12:54:21.033150+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": "2026-09-11T12:54:21.147871+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": "2026-09-11T12:54:21.273293+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": "2026-09-11T12:54:21.525329+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": "2026-09-11T12:54:21.710609+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": "2026-09-11T12:54:21.725725+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": "2026-09-11T12:54:21.741411+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": "2026-09-11T12:54:21.949289+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": "2026-09-11T12:54:22.064363+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": "2026-09-11T12:54:22.152411+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": "2026-09-11T12:54:22.432444+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": "2026-09-11T12:54:22.448610+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": "fa78b1dd73aca2a102688b4b27c3eff91d12848b944df3c7b8468b7fc6f49f94",
        "byte_count": 74676,
        "retrieved_at_utc": "2026-09-11T12:54:22.464515+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": "2026-09-11T12:54:22.590050+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": "2026-09-11T12:54:22.656877+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": "2026-09-11T12:54:22.718066+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": "2026-09-11T12:54:22.712673+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": "2026-09-11T12:54:22.640703+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": "2026-09-11T12:54:22.808519+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": "2026-09-11T12:54:23.172217+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": "2026-09-11T12:54:23.186067+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": "2026-09-11T12:54:23.313273+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": "2026-09-11T12:54:23.329173+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": "2026-09-11T12:54:23.344067+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": "2026-09-11T12:54:23.449446+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": "2026-09-11T12:54:23.478052+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": "2026-09-11T12:54:23.493691+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": "2026-09-11T12:54:23.918623+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": "2026-09-11T12:54:23.931997+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": "2026-09-11T12:54:24.046070+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": "2026-09-11T12:54:24.210842+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": "2026-09-11T12:54:24.338414+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": "2026-09-11T12:54:24.354694+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": "2026-09-11T12:54:24.603318+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": "2026-09-11T12:54:24.949645+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": "2026-09-11T12:54:24.963494+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": "2026-09-11T12:54:25.063619+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": "2026-09-11T12:54:25.077289+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": "2026-09-11T12:54:25.100083+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": "2026-09-11T12:54:25.107086+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": "2026-09-11T12:54:25.246728+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": "2026-09-11T12:54:25.530111+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": "2026-09-11T12:54:25.645447+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": "2026-09-11T12:54:25.659742+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": "2026-09-11T12:54:25.704440+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": "2026-09-11T12:54:25.719773+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": "2026-09-11T12:54:25.784157+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": "2026-09-11T12:54:25.921859+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": "2026-09-11T12:54:26.199825+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": "2026-09-11T12:54:26.296412+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": "2026-09-11T12:54:26.325900+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": "2026-09-11T12:54:26.396594+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": "2026-09-11T12:54:26.436108+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": "2026-09-11T12:54:26.563968+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": "2026-09-11T12:54:26.652193+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": "2026-09-11T12:54:26.677118+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": "2026-09-11T12:54:26.698360+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": "2026-09-11T12:54:26.830893+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": "2026-09-11T12:54:26.963264+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": "2026-09-11T12:54:26.983998+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": "2026-09-11T12:54:27.105493+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": "2026-09-11T12:54:27.204244+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": "2026-09-11T12:54:27.244500+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": "2026-09-11T12:54:27.375905+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": "2026-09-11T12:54:27.388201+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": "2026-09-11T12:54:27.543659+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": "2026-09-11T12:54:27.671183+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": "2026-09-11T12:54:27.686989+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": "2026-09-11T12:54:27.775260+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": "2026-09-11T12:54:27.881671+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": "2026-09-11T12:54:27.908290+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": "2026-09-11T12:54:28.014426+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": "2026-09-11T12:54:28.062631+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": "2026-09-11T12:54:28.077951+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": "2026-09-11T12:54:28.268360+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": "2026-09-11T12:54:28.307873+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": "2026-09-11T12:54:28.382958+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": "2026-09-11T12:54:28.404490+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": "2026-09-11T12:54:28.541992+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": "2026-09-11T12:54:28.847305+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": "2026-09-11T12:54:28.860216+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": "2026-09-11T12:54:29.049589+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": "2026-09-11T12:54:29.319133+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": "2026-09-11T12:54:29.502251+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": "2026-09-11T12:54:29.573083+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": "2026-09-11T12:54:29.887082+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": "2026-09-11T12:54:29.903423+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": "2026-09-11T12:54:29.923575+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": "2026-09-11T12:54:30.103868+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": "2026-09-11T12:54:30.191634+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": "2026-09-11T12:54:30.207904+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": "2044b9539fdb8ccffd603756fedf43bd3be2ed67d0972adb92230a04497bfed8",
        "byte_count": 27261,
        "retrieved_at_utc": "2026-09-11T12:54:30.417648+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": "2026-09-11T12:54:30.431824+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": "2026-09-11T12:54:30.558449+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": "2026-09-11T12:54:30.574322+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": "2026-09-11T12:54:30.591214+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": "2026-09-11T12:54:30.696103+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": "2026-09-11T12:54:30.767743+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": "2026-09-11T12:54:30.921346+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": "2026-09-11T12:54:30.934872+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": "2026-09-11T12:54:30.960650+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": "2026-09-11T12:54:31.134903+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": "2026-09-11T12:54:31.285203+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": "2026-09-11T12:54:31.302379+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": "2026-09-11T12:54:31.987853+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": "2026-09-11T12:54:32.194887+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": "6870c8485586b94fd2d4cb051f4338c32faafe27280231a6c753f22959c1ac9b",
      "byte_count": 247141,
      "retrieved_at_utc": "2026-09-11T12:54:33.005818+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": 2721,
            "accepted_numeric_observations": 2721,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 114,
            "parsed_24_00_numeric_observations": 114,
            "status_flag_counts": {
              "P": 1727,
              "R": 994
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2721,
            "accepted_numeric_observations": 2721,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 114,
            "parsed_24_00_numeric_observations": 114,
            "status_flag_counts": {
              "P": 1727,
              "R": 994
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5442,
        "parsed_24_00_numeric_observation_count": 228,
        "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": 2721,
        "PM2.5": 2721
      }
    },
    {
      "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": "58465d1fb5906091c2dcdba7b6c02a49fdbfb2a975eaf419e65424ab47b2457d",
      "byte_count": 293513,
      "retrieved_at_utc": "2026-09-11T12:54:33.245112+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": 3897,
            "accepted_numeric_observations": 3897,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 163,
            "parsed_24_00_numeric_observations": 163,
            "status_flag_counts": {
              "R": 2171,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 3897,
            "accepted_numeric_observations": 3897,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 163,
            "parsed_24_00_numeric_observations": 163,
            "status_flag_counts": {
              "R": 2171,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 7794,
        "parsed_24_00_numeric_observation_count": 326,
        "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": 3897,
        "PM2.5": 3897
      }
    },
    {
      "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": "9440d035b08f6bc94e76230ef1da182f8ee3fb1c893fff1f149a293e9d9ca7c6",
      "byte_count": 380244,
      "retrieved_at_utc": "2026-09-11T12:54:33.335106+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12130,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6065,
        "PM2.5": 6065
      }
    },
    {
      "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": "1519df4aee0c6aeec28a10b4e4fd6900857f31b5c8533a33ef0b5fb017c5a3da",
      "byte_count": 347643,
      "retrieved_at_utc": "2026-09-11T12:54:33.373325+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": 5240,
            "accepted_numeric_observations": 5240,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 219,
            "parsed_24_00_numeric_observations": 219,
            "status_flag_counts": {
              "R": 3514,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5240,
            "accepted_numeric_observations": 5240,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 219,
            "parsed_24_00_numeric_observations": 219,
            "status_flag_counts": {
              "R": 3514,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 10480,
        "parsed_24_00_numeric_observation_count": 438,
        "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": 5240,
        "PM2.5": 5240
      }
    },
    {
      "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": "c68f4d01e8cb8bbf560e9fe38069718d7acc5eff1b821645df318bfd58723428",
      "byte_count": 622845,
      "retrieved_at_utc": "2026-09-11T12:54:33.571496+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": 5168,
            "accepted_numeric_observations": 5168,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 216,
            "parsed_24_00_numeric_observations": 216,
            "status_flag_counts": {
              "R": 4265,
              "P": 903
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5405,
            "accepted_numeric_observations": 5405,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 226,
            "parsed_24_00_numeric_observations": 226,
            "status_flag_counts": {
              "R": 4291,
              "P": 1114
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5168,
            "accepted_numeric_observations": 5168,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 216,
            "parsed_24_00_numeric_observations": 216,
            "status_flag_counts": {
              "R": 4265,
              "P": 903
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 15741,
        "parsed_24_00_numeric_observation_count": 658,
        "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": 5405,
        "PM10": 5168,
        "PM2.5": 5168
      }
    },
    {
      "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": "2820ae5f031b8178969ed3a3a600122d9f8eda014c33181838e8bacfeec3f351",
      "byte_count": 775582,
      "retrieved_at_utc": "2026-09-11T12:54:33.602178+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": 6059,
            "accepted_numeric_observations": 6059,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4335,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5800,
            "accepted_numeric_observations": 5800,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 238,
            "parsed_24_00_numeric_observations": 238,
            "status_flag_counts": {
              "R": 4301,
              "P": 1499
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6059,
            "accepted_numeric_observations": 6059,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4335,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17918,
        "parsed_24_00_numeric_observation_count": 742,
        "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": 6059,
        "PM2.5": 6059,
        "NO2": 5800
      }
    },
    {
      "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": "a4c292d55795a0055c15ba18ed445d13d1f70496d4ccb950e09ebeda16d9e724",
      "byte_count": 838726,
      "retrieved_at_utc": "2026-09-11T12:54:33.619030+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": 5654,
            "accepted_numeric_observations": 5654,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 235,
            "parsed_24_00_numeric_observations": 235,
            "status_flag_counts": {
              "R": 4078,
              "P": 1576
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5851,
            "accepted_numeric_observations": 5851,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 244,
            "parsed_24_00_numeric_observations": 244,
            "status_flag_counts": {
              "R": 4135,
              "P": 1716
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5748,
            "accepted_numeric_observations": 5748,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 239,
            "parsed_24_00_numeric_observations": 239,
            "status_flag_counts": {
              "R": 4195,
              "P": 1553
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17253,
        "parsed_24_00_numeric_observation_count": 718,
        "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": 5851,
        "PM2.5": 5748,
        "PM10": 5654
      }
    },
    {
      "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": "6f47b03e02d91da5e593194bfb29c06b7069f52b31f59147e636e2fd49987e9b",
      "byte_count": 1227691,
      "retrieved_at_utc": "2026-09-11T12:54:33.628147+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": 5764,
            "accepted_numeric_observations": 5764,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 239,
            "parsed_24_00_numeric_observations": 239,
            "status_flag_counts": {
              "P": 3729,
              "R": 2035
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5957,
            "accepted_numeric_observations": 5957,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "P": 3841,
              "R": 2116
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5768,
            "accepted_numeric_observations": 5768,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 241,
            "parsed_24_00_numeric_observations": 241,
            "status_flag_counts": {
              "P": 3733,
              "R": 2035
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17489,
        "parsed_24_00_numeric_observation_count": 730,
        "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": 5957,
        "PM2.5": 5768,
        "PM10": 5764
      }
    },
    {
      "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": "88d71166dcfb2b267c8aa563c7f39f8cf2e88eaa6dd5b4d516189c53e1615fe8",
      "byte_count": 514645,
      "retrieved_at_utc": "2026-09-11T12:54:33.932276+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": 5945,
            "accepted_numeric_observations": 5945,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4294,
              "P": 1651
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5629,
            "accepted_numeric_observations": 5629,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 237,
            "parsed_24_00_numeric_observations": 237,
            "status_flag_counts": {
              "R": 4118,
              "P": 1511
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11574,
        "parsed_24_00_numeric_observation_count": 487,
        "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": 5945,
        "PM2.5": 5629
      }
    },
    {
      "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": "7edf9f9ea0e2b44b902b5b6093d064b350ea229bb42ff9a5032116ae2dee52c9",
      "byte_count": 639484,
      "retrieved_at_utc": "2026-09-11T12:54:34.227061+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": 5726,
            "accepted_numeric_observations": 5726,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 238,
            "parsed_24_00_numeric_observations": 238,
            "status_flag_counts": {
              "R": 4128,
              "P": 1598
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5934,
            "accepted_numeric_observations": 5934,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4253,
              "P": 1681
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5222,
            "accepted_numeric_observations": 5222,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 217,
            "parsed_24_00_numeric_observations": 217,
            "status_flag_counts": {
              "R": 3796,
              "P": 1426
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 16882,
        "parsed_24_00_numeric_observation_count": 704,
        "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": 5934,
        "PM10": 5726,
        "PM2.5": 5222
      }
    },
    {
      "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": "cb2ce5674e51754b16fb166a4460475c9884012eae6b25478daab7f37515a8c8",
      "byte_count": 538253,
      "retrieved_at_utc": "2026-09-11T12:54:34.440390+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": 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": 4293,
              "P": 1691
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12045,
        "parsed_24_00_numeric_observation_count": 502,
        "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": 6061,
        "NO2": 5984
      }
    },
    {
      "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": "7a4ce77208fafbb372ca843d573addd21b46b10d4eb6a6ac3e0bddee2cb9da96",
      "byte_count": 400417,
      "retrieved_at_utc": "2026-09-11T12:54:34.553140+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": 5967,
            "accepted_numeric_observations": 5967,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4285,
              "P": 1682
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5967,
        "parsed_24_00_numeric_observation_count": 249,
        "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": 5967
      }
    },
    {
      "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": "3b95b551cecbe276eabf6bfc91cfaa6ab0fb18aefc6a8ce1163de44a4c9c5602",
      "byte_count": 766931,
      "retrieved_at_utc": "2026-09-11T12:54:34.630925+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5757,
            "accepted_numeric_observations": 5757,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 241,
            "parsed_24_00_numeric_observations": 241,
            "status_flag_counts": {
              "R": 4287,
              "P": 1470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17881,
        "parsed_24_00_numeric_observation_count": 745,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 5757
      }
    },
    {
      "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": "7635e3f050af61660ee7f6d0465046e241d419f5d0f4fa5fd790c78fd1409f5c",
      "byte_count": 538009,
      "retrieved_at_utc": "2026-09-11T12:54:34.787803+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": 5949,
            "accepted_numeric_observations": 5949,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4266,
              "P": 1683
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12013,
        "parsed_24_00_numeric_observation_count": 502,
        "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": 6064,
        "NO2": 5949
      }
    },
    {
      "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": "3abd1dd077b7d348a121b07e0b360ce2d1cff02fb768346e988add8b286076d8",
      "byte_count": 244365,
      "retrieved_at_utc": "2026-09-11T12:54:34.785953+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": 6068,
            "accepted_numeric_observations": 6068,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4342,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6068,
        "parsed_24_00_numeric_observation_count": 253,
        "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": 6068
      }
    },
    {
      "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": "996fdda4a811c61c37dc190e9e0af03f8aebce3dd136956433092b93d89f4a69",
      "byte_count": 936059,
      "retrieved_at_utc": "2026-09-11T12:54:34.785470+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": 6057,
            "accepted_numeric_observations": 6057,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6057,
            "accepted_numeric_observations": 6057,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12114,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6057,
        "PM2.5": 6057
      }
    },
    {
      "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": "cbd74c5034c05fdd544158daae38a64080b084414ea2d85090bdaac85224effb",
      "byte_count": 774806,
      "retrieved_at_utc": "2026-09-11T12:54:34.829600+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5637,
            "accepted_numeric_observations": 5637,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 230,
            "parsed_24_00_numeric_observations": 230,
            "status_flag_counts": {
              "R": 4290,
              "P": 1347
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17769,
        "parsed_24_00_numeric_observation_count": 734,
        "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": 6066,
        "PM2.5": 6066,
        "NO2": 5637
      }
    },
    {
      "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": "6daff3d3426837497f3e0b9c8176d6543dc941477b905a664abdf98cf0db7f9c",
      "byte_count": 538107,
      "retrieved_at_utc": "2026-09-11T12:54:35.209641+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": 5793,
            "accepted_numeric_observations": 5793,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4205,
              "P": 1588
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5992,
            "accepted_numeric_observations": 5992,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4295,
              "P": 1697
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11785,
        "parsed_24_00_numeric_observation_count": 493,
        "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": 5992,
        "PM10": 5793
      }
    },
    {
      "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": "27bc85118e2370aff61735fbbbbd458b4348e683d699efd5001e3b0b6729fe68",
      "byte_count": 647758,
      "retrieved_at_utc": "2026-09-11T12:54:35.436412+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": 5638,
            "accepted_numeric_observations": 5638,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 235,
            "parsed_24_00_numeric_observations": 235,
            "status_flag_counts": {
              "R": 3994,
              "P": 1644
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5992,
            "accepted_numeric_observations": 5992,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4304,
              "P": 1688
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5705,
            "accepted_numeric_observations": 5705,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 240,
            "parsed_24_00_numeric_observations": 240,
            "status_flag_counts": {
              "R": 4077,
              "P": 1628
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17335,
        "parsed_24_00_numeric_observation_count": 724,
        "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": 5992,
        "PM2.5": 5705,
        "PM10": 5638
      }
    },
    {
      "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": "2aecc75665cf86a322f318ef1f3a187ba4bf475a57030b722362a2b2b4ac955f",
      "byte_count": 244111,
      "retrieved_at_utc": "2026-09-11T12:54:35.570971+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4338,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6062,
        "parsed_24_00_numeric_observation_count": 253,
        "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": 6062
      }
    },
    {
      "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": "648284c751c1a2d9944356cb5d2d0bb951b0eee65c14b356d16998f388b15adb",
      "byte_count": 482161,
      "retrieved_at_utc": "2026-09-11T12:54:35.767670+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": 6032,
            "accepted_numeric_observations": 6032,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1692
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6032,
            "accepted_numeric_observations": 6032,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1692
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12064,
        "parsed_24_00_numeric_observation_count": 502,
        "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": 6032,
        "PM2.5": 6032
      }
    },
    {
      "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": "747a3840eb3c17f72c88e4da777deea6a9a208d34f1db617d4f133c8a95fbd96",
      "byte_count": 763677,
      "retrieved_at_utc": "2026-09-11T12:54:35.801452+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5778,
            "accepted_numeric_observations": 5778,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 243,
            "parsed_24_00_numeric_observations": 243,
            "status_flag_counts": {
              "R": 4293,
              "P": 1485
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17902,
        "parsed_24_00_numeric_observation_count": 747,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 5778
      }
    },
    {
      "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": "273a9651d33c46860c260ef47566fee52fdf77035b8e4e1cbb045d490e3db501",
      "byte_count": 843845,
      "retrieved_at_utc": "2026-09-11T12:54:35.920458+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": 5791,
            "accepted_numeric_observations": 5791,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4200,
              "P": 1591
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5979,
            "accepted_numeric_observations": 5979,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4291,
              "P": 1688
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5631,
            "accepted_numeric_observations": 5631,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 236,
            "parsed_24_00_numeric_observations": 236,
            "status_flag_counts": {
              "R": 4046,
              "P": 1585
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17401,
        "parsed_24_00_numeric_observation_count": 728,
        "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": 5979,
        "PM10": 5791,
        "PM2.5": 5631
      }
    },
    {
      "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": "ab772fd6d300de0e865b8615fdca06fe919569798be725fe2213f31c52df3b88",
      "byte_count": 773362,
      "retrieved_at_utc": "2026-09-11T12:54:35.993726+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": 6020,
            "accepted_numeric_observations": 6020,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4296,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5947,
            "accepted_numeric_observations": 5947,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4270,
              "P": 1677
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6020,
            "accepted_numeric_observations": 6020,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4296,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17987,
        "parsed_24_00_numeric_observation_count": 750,
        "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": 6020,
        "PM2.5": 6020,
        "NO2": 5947
      }
    },
    {
      "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": "40c1b4484338f26d65c1fc745cea3bcf83fa691a30520888e276485cb8b2109b",
      "byte_count": 873287,
      "retrieved_at_utc": "2026-09-11T12:54:36.012650+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": 5975,
            "accepted_numeric_observations": 5975,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4295,
              "P": 1680
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5956,
            "accepted_numeric_observations": 5956,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4264,
              "P": 1692
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5975,
            "accepted_numeric_observations": 5975,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4295,
              "P": 1680
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17906,
        "parsed_24_00_numeric_observation_count": 744,
        "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": 5975,
        "PM2.5": 5975,
        "NO2": 5956
      }
    },
    {
      "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": "c24b40ba504af8d24203edf9483b8eda1cd27dfe8472b5608e4804b0828b7481",
      "byte_count": 203230,
      "retrieved_at_utc": "2026-09-11T12:54:36.129556+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": 1596,
            "accepted_numeric_observations": 1596,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 67,
            "parsed_24_00_numeric_observations": 67,
            "status_flag_counts": {
              "P": 1596
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 1596,
            "accepted_numeric_observations": 1596,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 67,
            "parsed_24_00_numeric_observations": 67,
            "status_flag_counts": {
              "P": 1596
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 3192,
        "parsed_24_00_numeric_observation_count": 134,
        "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": 1596,
        "PM2.5": 1596
      }
    },
    {
      "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": "e37a4094a41da34a6c6896ddcd87c0a51d052db9053a4dc051c83e1b5d1d3b17",
      "byte_count": 777884,
      "retrieved_at_utc": "2026-09-11T12:54:36.246443+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": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5990,
            "accepted_numeric_observations": 5990,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4296,
              "P": 1694
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18118,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6064,
        "PM2.5": 6064,
        "NO2": 5990
      }
    },
    {
      "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": "0a09a91ee4d3a98875902573a94d4daa3b7b62d27e271fa7116868bcc18298ae",
      "byte_count": 138297,
      "retrieved_at_utc": "2026-09-11T12:54:36.710806+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": {
          "PM2.5": {
            "value": "PM<sub>2.5</sub> particulate matter (Hourly measured)",
            "status": "status"
          }
        },
        "pollutants": {
          "PM2.5": {
            "source_numeric_observations": 828,
            "accepted_numeric_observations": 828,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 34,
            "parsed_24_00_numeric_observations": 34,
            "status_flag_counts": {
              "P": 828
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 828,
        "parsed_24_00_numeric_observation_count": 34,
        "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": 828
      }
    },
    {
      "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": "188d5f7b3c74965be9ff3cd113bd43186aa369322f0ecb72de4e02476ca1c41f",
      "byte_count": 218369,
      "retrieved_at_utc": "2026-09-11T12:54:36.765626+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": 5545,
            "accepted_numeric_observations": 5545,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 231,
            "parsed_24_00_numeric_observations": 231,
            "status_flag_counts": {
              "R": 4020,
              "P": 1525
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5545,
        "parsed_24_00_numeric_observation_count": 231,
        "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": 5545
      }
    },
    {
      "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": "06e7b130351e6c695ae3d2578cf8cf1513d1f222a1a55b34b65eb31e8be418df",
      "byte_count": 779173,
      "retrieved_at_utc": "2026-09-11T12:54:36.812528+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": 6055,
            "accepted_numeric_observations": 6055,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "P": 3900,
              "R": 2155
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5972,
            "accepted_numeric_observations": 5972,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "P": 3869,
              "R": 2103
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6055,
            "accepted_numeric_observations": 6055,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "P": 3900,
              "R": 2155
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18082,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6055,
        "PM2.5": 6055,
        "NO2": 5972
      }
    },
    {
      "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": "e76fd013b761eabee8c35a1a7d80dcddd67efc04429299641dc3fcb990f20c78",
      "byte_count": 404155,
      "retrieved_at_utc": "2026-09-11T12:54:36.820422+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": 6017,
            "accepted_numeric_observations": 6017,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4317,
              "P": 1700
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6017,
        "parsed_24_00_numeric_observation_count": 252,
        "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": 6017
      }
    },
    {
      "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": "0d3ac1019dfbbde25ef016193703be5148e0d1f065c7170d8726ec6ad56dab31",
      "byte_count": 478500,
      "retrieved_at_utc": "2026-09-11T12:54:36.830222+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": 5672,
            "accepted_numeric_observations": 5672,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 237,
            "parsed_24_00_numeric_observations": 237,
            "status_flag_counts": {
              "R": 4155,
              "P": 1517
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 4416,
            "accepted_numeric_observations": 4416,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 186,
            "parsed_24_00_numeric_observations": 186,
            "status_flag_counts": {
              "R": 3003,
              "P": 1413
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 10088,
        "parsed_24_00_numeric_observation_count": 423,
        "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": 5672,
        "NO2": 4416
      }
    },
    {
      "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": "b555419f3ee9b9d14ed87cc822a438091e5d1f0f811fd31698b09b57d558fdda",
      "byte_count": 403979,
      "retrieved_at_utc": "2026-09-11T12:54:36.942844+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": 5981,
            "accepted_numeric_observations": 5981,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "P": 3860,
              "R": 2121
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5981,
        "parsed_24_00_numeric_observation_count": 250,
        "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": 5981
      }
    },
    {
      "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": "2f638085542f4dfbff88ece50bd64082c9ed7d1d03bf65267f7ef10bb13791eb",
      "byte_count": 772733,
      "retrieved_at_utc": "2026-09-11T12:54:37.169644+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": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5870,
            "accepted_numeric_observations": 5870,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 246,
            "parsed_24_00_numeric_observations": 246,
            "status_flag_counts": {
              "R": 4148,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17990,
        "parsed_24_00_numeric_observation_count": 750,
        "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": 6060,
        "PM2.5": 6060,
        "NO2": 5870
      }
    },
    {
      "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": "f76d4dc1b7713fb038de3a2826c60c4ed58a1a67c0899447def95dc5bb67b6a4",
      "byte_count": 774231,
      "retrieved_at_utc": "2026-09-11T12:54:37.246777+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5982,
            "accepted_numeric_observations": 5982,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4287,
              "P": 1695
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18112,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6065,
        "PM2.5": 6065,
        "NO2": 5982
      }
    },
    {
      "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": "d1384288c1139edf2e7b4ae295368bd17c0c0ac5e53c93a43cd30a78d219ef3f",
      "byte_count": 227327,
      "retrieved_at_utc": "2026-09-11T12:54:37.531233+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": 2197,
            "accepted_numeric_observations": 2197,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 92,
            "parsed_24_00_numeric_observations": 92,
            "status_flag_counts": {
              "P": 1727,
              "R": 470
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2197,
            "accepted_numeric_observations": 2197,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 92,
            "parsed_24_00_numeric_observations": 92,
            "status_flag_counts": {
              "P": 1727,
              "R": 470
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 4394,
        "parsed_24_00_numeric_observation_count": 184,
        "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": 2197,
        "PM2.5": 2197
      }
    },
    {
      "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": "79bcc96055966ac2caa4e5bc38f66bdbb9e8f96d45dadd121a0131fda9e1eca2",
      "byte_count": 405694,
      "retrieved_at_utc": "2026-09-11T12:54:37.678863+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": 5948,
            "accepted_numeric_observations": 5948,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4257,
              "P": 1691
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5948,
        "parsed_24_00_numeric_observation_count": 248,
        "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": 5948
      }
    },
    {
      "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": "65606a1f0eea8c70f8b32e2610fc3285c37ebadbdd1aae8d29d533082b0f40c5",
      "byte_count": 773135,
      "retrieved_at_utc": "2026-09-11T12:54:37.783578+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12130,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6065,
        "PM2.5": 6065
      }
    },
    {
      "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": "ecd5d91a130df301ff0f51c0513a500419010298174db73907998d5f89cebe4b",
      "byte_count": 545185,
      "retrieved_at_utc": "2026-09-11T12:54:38.087258+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": 6003,
            "accepted_numeric_observations": 6003,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4298,
              "P": 1705
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12068,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6065,
        "NO2": 6003
      }
    },
    {
      "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": "168b0a77d8dc97bcdba2b63397677b04fc30400cf44377e71f700c56c49c9fd8",
      "byte_count": 1313890,
      "retrieved_at_utc": "2026-09-11T12:54:38.077828+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": 5644,
            "accepted_numeric_observations": 5644,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 235,
            "parsed_24_00_numeric_observations": 235,
            "status_flag_counts": {
              "R": 4338,
              "P": 1306
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5980,
            "accepted_numeric_observations": 5980,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4296,
              "P": 1684
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5644,
            "accepted_numeric_observations": 5644,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 235,
            "parsed_24_00_numeric_observations": 235,
            "status_flag_counts": {
              "R": 4338,
              "P": 1306
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17268,
        "parsed_24_00_numeric_observation_count": 721,
        "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": 5980,
        "PM10": 5644,
        "PM2.5": 5644
      }
    },
    {
      "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": "70ea3ed832452590f489ae9d4b000009ad1c5f666a6852f676ccb72f12d2aab8",
      "byte_count": 379377,
      "retrieved_at_utc": "2026-09-11T12:54:38.094942+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": 6044,
            "accepted_numeric_observations": 6044,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4320,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6044,
            "accepted_numeric_observations": 6044,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4320,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12088,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6044,
        "PM2.5": 6044
      }
    },
    {
      "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": "9e922f627da1cdd6ef9c06a0a964b0321cca577c2edbf5eb4bef6a325ed65bf0",
      "byte_count": 764995,
      "retrieved_at_utc": "2026-09-11T12:54:38.106990+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": 6051,
            "accepted_numeric_observations": 6051,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1714
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5669,
            "accepted_numeric_observations": 5669,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 236,
            "parsed_24_00_numeric_observations": 236,
            "status_flag_counts": {
              "R": 4030,
              "P": 1639
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6051,
            "accepted_numeric_observations": 6051,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1714
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17771,
        "parsed_24_00_numeric_observation_count": 740,
        "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": 6051,
        "PM2.5": 6051,
        "NO2": 5669
      }
    },
    {
      "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": "c19bfa0f56008bb2600d9a8369d7eca08bb58b5861eb6e25ce45f85ce4e88cc6",
      "byte_count": 863405,
      "retrieved_at_utc": "2026-09-11T12:54:38.365952+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5969,
            "accepted_numeric_observations": 5969,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4295,
              "P": 1674
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18095,
        "parsed_24_00_numeric_observation_count": 755,
        "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": 6063,
        "PM2.5": 6063,
        "NO2": 5969
      }
    },
    {
      "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": "9db9221a24d0e93f0e2b27a87bb2f26e6c69630e9d61779b5579f7a859382357",
      "byte_count": 678324,
      "retrieved_at_utc": "2026-09-11T12:54:38.554807+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": 5988,
            "accepted_numeric_observations": 5988,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4265,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5970,
            "accepted_numeric_observations": 5970,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4286,
              "P": 1684
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5988,
            "accepted_numeric_observations": 5988,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4265,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17946,
        "parsed_24_00_numeric_observation_count": 747,
        "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": 5988,
        "PM2.5": 5988,
        "NO2": 5970
      }
    },
    {
      "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": "55d0f3326b09eea3d21e9e152c0e9b2fe26992e72d982875cf88b970a2eda4c0",
      "byte_count": 775063,
      "retrieved_at_utc": "2026-09-11T12:54:38.768586+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": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5981,
            "accepted_numeric_observations": 5981,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4295,
              "P": 1686
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18110,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6065,
        "PM10": 6064,
        "NO2": 5981
      }
    },
    {
      "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": "d2cca31db46fc017b550f833f43297bcca5ab3aeadb1c2b4f13393369d4c6a03",
      "byte_count": 977544,
      "retrieved_at_utc": "2026-09-11T12:54:38.923323+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4342,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5999,
            "accepted_numeric_observations": 5999,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4306,
              "P": 1693
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4342,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18129,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6065,
        "PM2.5": 6065,
        "NO2": 5999
      }
    },
    {
      "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": "c1ce85e189fd2ae13ef84d94039866c7a44d9cd127ef7bf7515c417754fdd5c9",
      "byte_count": 381443,
      "retrieved_at_utc": "2026-09-11T12:54:38.990881+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12132,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6066,
        "PM2.5": 6066
      }
    },
    {
      "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": "43c7117a8b55c1d5257d360513f5bb8e1c9b1775f19ac468e3f4594de68e4fe0",
      "byte_count": 519630,
      "retrieved_at_utc": "2026-09-11T12:54:39.238703+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": 5932,
            "accepted_numeric_observations": 5932,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4244,
              "P": 1688
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5530,
            "accepted_numeric_observations": 5530,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 231,
            "parsed_24_00_numeric_observations": 231,
            "status_flag_counts": {
              "R": 3892,
              "P": 1638
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11462,
        "parsed_24_00_numeric_observation_count": 480,
        "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": 5932,
        "PM2.5": 5530
      }
    },
    {
      "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": "520099ad08b6f5b4a31e9bb1c86e3aaf243e55a6a564108aabd1861aad4ba560",
      "byte_count": 635109,
      "retrieved_at_utc": "2026-09-11T12:54:39.283748+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": 5648,
            "accepted_numeric_observations": 5648,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 237,
            "parsed_24_00_numeric_observations": 237,
            "status_flag_counts": {
              "R": 4245,
              "P": 1403
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5640,
            "accepted_numeric_observations": 5640,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 236,
            "parsed_24_00_numeric_observations": 236,
            "status_flag_counts": {
              "R": 4291,
              "P": 1349
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5297,
            "accepted_numeric_observations": 5297,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 222,
            "parsed_24_00_numeric_observations": 222,
            "status_flag_counts": {
              "R": 3886,
              "P": 1411
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 16585,
        "parsed_24_00_numeric_observation_count": 695,
        "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": 5648,
        "NO2": 5640,
        "PM2.5": 5297
      }
    },
    {
      "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": "7e6b377c5e95e83b67acb56ba29a782c4d50dcbc7e324627cbc0e00513ff6504",
      "byte_count": 750372,
      "retrieved_at_utc": "2026-09-11T12:54:39.298325+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": 5867,
            "accepted_numeric_observations": 5867,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 243,
            "parsed_24_00_numeric_observations": 243,
            "status_flag_counts": {
              "R": 4243,
              "P": 1624
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5961,
            "accepted_numeric_observations": 5961,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4285,
              "P": 1676
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5853,
            "accepted_numeric_observations": 5853,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 246,
            "parsed_24_00_numeric_observations": 246,
            "status_flag_counts": {
              "R": 4233,
              "P": 1620
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17681,
        "parsed_24_00_numeric_observation_count": 739,
        "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": 5961,
        "PM10": 5867,
        "PM2.5": 5853
      }
    },
    {
      "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": "989e0c0ae531b469b91c11995ac7a71c402ca031e0e40e30cf0653575a611d9c",
      "byte_count": 740046,
      "retrieved_at_utc": "2026-09-11T12:54:39.399271+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": 5592,
            "accepted_numeric_observations": 5592,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 234,
            "parsed_24_00_numeric_observations": 234,
            "status_flag_counts": {
              "P": 3435,
              "R": 2157
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5595,
            "accepted_numeric_observations": 5595,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 235,
            "parsed_24_00_numeric_observations": 235,
            "status_flag_counts": {
              "P": 3470,
              "R": 2125
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5592,
            "accepted_numeric_observations": 5592,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 234,
            "parsed_24_00_numeric_observations": 234,
            "status_flag_counts": {
              "P": 3435,
              "R": 2157
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 16779,
        "parsed_24_00_numeric_observation_count": 703,
        "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": 5595,
        "PM10": 5592,
        "PM2.5": 5592
      }
    },
    {
      "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": "a9cb50e1d58d8ec7887cae9cc4ead3766283eceef71f237c302e3102e1017810",
      "byte_count": 381782,
      "retrieved_at_utc": "2026-09-11T12:54:39.642014+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12130,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6065,
        "PM2.5": 6065
      }
    },
    {
      "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": "d3ce54574a3c52e12a7026038b8cffd8c851e2755748fdca3256a9fd390e7678",
      "byte_count": 780804,
      "retrieved_at_utc": "2026-09-11T12:54:39.638950+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4342,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5990,
            "accepted_numeric_observations": 5990,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4297,
              "P": 1693
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4342,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18120,
        "parsed_24_00_numeric_observation_count": 752,
        "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": 6065,
        "PM2.5": 6065,
        "NO2": 5990
      }
    },
    {
      "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": "e9908f8fdff3929301fecd4587a914b9f1bf16a59da5663bb98bdc4c0322f2e7",
      "byte_count": 654763,
      "retrieved_at_utc": "2026-09-11T12:54:40.045817+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": 5733,
            "accepted_numeric_observations": 5733,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 240,
            "parsed_24_00_numeric_observations": 240,
            "status_flag_counts": {
              "R": 4178,
              "P": 1555
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5971,
            "accepted_numeric_observations": 5971,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4289,
              "P": 1682
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5712,
            "accepted_numeric_observations": 5712,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 238,
            "parsed_24_00_numeric_observations": 238,
            "status_flag_counts": {
              "R": 4156,
              "P": 1556
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17416,
        "parsed_24_00_numeric_observation_count": 729,
        "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": 5971,
        "PM10": 5733,
        "PM2.5": 5712
      }
    },
    {
      "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": "976323bfac4b61a2207bc1001b635ea93749d0dfce1d65998ea7d9997642eda8",
      "byte_count": 755666,
      "retrieved_at_utc": "2026-09-11T12:54:40.060631+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": 5782,
            "accepted_numeric_observations": 5782,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4141,
              "P": 1641
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5979,
            "accepted_numeric_observations": 5979,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4303,
              "P": 1676
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5857,
            "accepted_numeric_observations": 5857,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4220,
              "P": 1637
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17618,
        "parsed_24_00_numeric_observation_count": 735,
        "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": 5979,
        "PM2.5": 5857,
        "PM10": 5782
      }
    },
    {
      "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": "df592f537a38a8e0d05a6f47d6e0876450f23e8a9410f722c6e777d0bb6a9b43",
      "byte_count": 546263,
      "retrieved_at_utc": "2026-09-11T12:54:40.418216+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": 6010,
            "accepted_numeric_observations": 6010,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4311,
              "P": 1699
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6051,
            "accepted_numeric_observations": 6051,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1711
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12061,
        "parsed_24_00_numeric_observation_count": 503,
        "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": 6051,
        "NO2": 6010
      }
    },
    {
      "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": "0500c4e5c5963d1df0bb2e716dc5d6714258b8b5341fdabb85b4e719f1138cee",
      "byte_count": 764688,
      "retrieved_at_utc": "2026-09-11T12:54:40.483042+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5832,
            "accepted_numeric_observations": 5832,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4197,
              "P": 1635
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17958,
        "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",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6063,
        "PM2.5": 6063,
        "NO2": 5832
      }
    },
    {
      "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": "cc5156af3e6df9f05381515a88b34da34be19405c437d073cca6c5717cde2658",
      "byte_count": 673629,
      "retrieved_at_utc": "2026-09-11T12:54:40.504528+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": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1720
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5898,
            "accepted_numeric_observations": 5898,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4240,
              "P": 1658
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1720
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18020,
        "parsed_24_00_numeric_observation_count": 752,
        "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": 6061,
        "PM2.5": 6061,
        "NO2": 5898
      }
    },
    {
      "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": "65fe63de292a72f19a203ec244e03b9e891020754d778d114b05fb5a21d6e908",
      "byte_count": 954377,
      "retrieved_at_utc": "2026-09-11T12:54:40.519513+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12124,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6062,
        "PM2.5": 6062
      }
    },
    {
      "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": "c19cf2ac4027ba592ea71104e6d545e7725b2066f1522cc90ced82521aefd4c8",
      "byte_count": 681288,
      "retrieved_at_utc": "2026-09-11T12:54:40.677223+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": 5992,
            "accepted_numeric_observations": 5992,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4269,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6006,
            "accepted_numeric_observations": 6006,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4287,
              "P": 1719
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5992,
            "accepted_numeric_observations": 5992,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4269,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17990,
        "parsed_24_00_numeric_observation_count": 748,
        "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": 6006,
        "PM10": 5992,
        "PM2.5": 5992
      }
    },
    {
      "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": "6537f9bd989ab88ca0d42d75307bae89f66edfeb1cd00420b683ca7524981830",
      "byte_count": 771350,
      "retrieved_at_utc": "2026-09-11T12:54:40.760653+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": 5842,
            "accepted_numeric_observations": 5842,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 243,
            "parsed_24_00_numeric_observations": 243,
            "status_flag_counts": {
              "R": 4118,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6029,
            "accepted_numeric_observations": 6029,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4314,
              "P": 1715
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5842,
            "accepted_numeric_observations": 5842,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 243,
            "parsed_24_00_numeric_observations": 243,
            "status_flag_counts": {
              "R": 4118,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17713,
        "parsed_24_00_numeric_observation_count": 738,
        "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": 6029,
        "PM10": 5842,
        "PM2.5": 5842
      }
    },
    {
      "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": "30cc9ee5be9139c65247b8167232431991031a09a0d6842e62ec9a951faa80fb",
      "byte_count": 296727,
      "retrieved_at_utc": "2026-09-11T12:54:40.899517+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": 3358,
            "accepted_numeric_observations": 3358,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 140,
            "parsed_24_00_numeric_observations": 140,
            "status_flag_counts": {
              "R": 1795,
              "P": 1563
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 3358,
        "parsed_24_00_numeric_observation_count": 140,
        "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": 3358
      }
    },
    {
      "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": "39e066f17eb9ef924786fc89f9dcd2f1cae137ed14af18c4e7387989a10eface",
      "byte_count": 380015,
      "retrieved_at_utc": "2026-09-11T12:54:40.935948+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12132,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6066,
        "PM2.5": 6066
      }
    },
    {
      "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": "3bfe60f6e9a0a8b1ea4ef52bcc61d5cc45a94be08a3e9f40759617953e5a1734",
      "byte_count": 380645,
      "retrieved_at_utc": "2026-09-11T12:54:41.250883+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12124,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6062,
        "PM2.5": 6062
      }
    },
    {
      "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": "0370ba2be3026cd387f3ce1e28b4b7ba6deee16188adcd977b1d8af17659be9d",
      "byte_count": 139955,
      "retrieved_at_utc": "2026-09-11T12:54:41.346891+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": {},
        "pollutants": {},
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 0,
        "parsed_24_00_numeric_observation_count": 0,
        "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": [],
      "parsed_observation_counts": {}
    },
    {
      "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": "80a59d6e0215201a666f818a7809cb0446d38574a8eff779654612729e88a07f",
      "byte_count": 380480,
      "retrieved_at_utc": "2026-09-11T12:54:41.381661+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": 6069,
            "accepted_numeric_observations": 6069,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4342,
              "P": 1727
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6069,
            "accepted_numeric_observations": 6069,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4342,
              "P": 1727
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12138,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6069,
        "PM2.5": 6069
      }
    },
    {
      "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": "a1ba39c20d81bbd96f3e4115fac9f37007abd312d49a686a9e97531e19a68154",
      "byte_count": 588666,
      "retrieved_at_utc": "2026-09-11T12:54:41.477427+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": 5895,
            "accepted_numeric_observations": 5895,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 4198,
              "P": 1697
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 4405,
            "accepted_numeric_observations": 4405,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 184,
            "parsed_24_00_numeric_observations": 184,
            "status_flag_counts": {
              "R": 2916,
              "P": 1489
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 10300,
        "parsed_24_00_numeric_observation_count": 431,
        "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": 5895,
        "PM2.5": 4405
      }
    },
    {
      "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": "8558a437d67d40de28381b878f0b5b9759d2c639655ea3e40b57126bedf7fc26",
      "byte_count": 248583,
      "retrieved_at_utc": "2026-09-11T12:54:41.634050+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": 2745,
            "accepted_numeric_observations": 2745,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 115,
            "parsed_24_00_numeric_observations": 115,
            "status_flag_counts": {
              "P": 1724,
              "R": 1021
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2745,
            "accepted_numeric_observations": 2745,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 115,
            "parsed_24_00_numeric_observations": 115,
            "status_flag_counts": {
              "P": 1724,
              "R": 1021
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5490,
        "parsed_24_00_numeric_observation_count": 230,
        "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": 2745,
        "PM2.5": 2745
      }
    },
    {
      "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": "2b01e4b9311a29753fd6cb9479e720bfaa39607d73d6638dcaf8ab5c3ac843f2",
      "byte_count": 856079,
      "retrieved_at_utc": "2026-09-11T12:54:41.678805+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4338,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5858,
            "accepted_numeric_observations": 5858,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4138,
              "P": 1720
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4338,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17984,
        "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",
        "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": 6063,
        "PM2.5": 6063,
        "NO2": 5858
      }
    },
    {
      "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": "31bf3af677105f921f85e3b6e2524ee23719fc4351ce00d7d88395eea35403a0",
      "byte_count": 673986,
      "retrieved_at_utc": "2026-09-11T12:54:41.747816+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": 6059,
            "accepted_numeric_observations": 6059,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5817,
            "accepted_numeric_observations": 5817,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4101,
              "P": 1716
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6059,
            "accepted_numeric_observations": 6059,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17935,
        "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": {
        "PM10": 6059,
        "PM2.5": 6059,
        "NO2": 5817
      }
    },
    {
      "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": "c324c5a95300cce0fc0c3f1ed14809551dd75c5a6e9cb39a996983f869790ab6",
      "byte_count": 1074186,
      "retrieved_at_utc": "2026-09-11T12:54:42.035283+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5993,
            "accepted_numeric_observations": 5993,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4332,
              "P": 1661
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18117,
        "parsed_24_00_numeric_observation_count": 755,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 5993
      }
    },
    {
      "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": "c2c0ace0c6fb73b24b096d08bb78c0e68f5217794d8cc5ec8c46c1805fbf1456",
      "byte_count": 380209,
      "retrieved_at_utc": "2026-09-11T12:54:42.217251+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": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12128,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6064,
        "PM2.5": 6064
      }
    },
    {
      "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": "2de96d4e7079e40cc3bdcde62980d4411d440064a8b42f2369996454f534dd8d",
      "byte_count": 772391,
      "retrieved_at_utc": "2026-09-11T12:54:42.296163+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": 5957,
            "accepted_numeric_observations": 5957,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 4336,
              "P": 1621
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6003,
            "accepted_numeric_observations": 6003,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4315,
              "P": 1688
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5957,
            "accepted_numeric_observations": 5957,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 4336,
              "P": 1621
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17917,
        "parsed_24_00_numeric_observation_count": 745,
        "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": 6003,
        "PM10": 5957,
        "PM2.5": 5957
      }
    },
    {
      "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": "0e03b531c895b8404836b319c21a83b1c4c8154d45788f969fef87436d0a44e9",
      "byte_count": 1262886,
      "retrieved_at_utc": "2026-09-11T12:54:42.620436+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": 5924,
            "accepted_numeric_observations": 5924,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "P": 3853,
              "R": 2071
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6016,
            "accepted_numeric_observations": 6016,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "P": 3895,
              "R": 2121
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5924,
            "accepted_numeric_observations": 5924,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "P": 3853,
              "R": 2071
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17864,
        "parsed_24_00_numeric_observation_count": 745,
        "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": 6016,
        "PM10": 5924,
        "PM2.5": 5924
      }
    },
    {
      "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": "80d09a779b9bc42890e88f6945beda2765999cda29121d2e59460eaeafb7cb1f",
      "byte_count": 742384,
      "retrieved_at_utc": "2026-09-11T12:54:42.680559+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": 6042,
            "accepted_numeric_observations": 6042,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4341,
              "P": 1701
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5275,
            "accepted_numeric_observations": 5275,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 220,
            "parsed_24_00_numeric_observations": 220,
            "status_flag_counts": {
              "R": 3655,
              "P": 1620
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6042,
            "accepted_numeric_observations": 6042,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4341,
              "P": 1701
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17359,
        "parsed_24_00_numeric_observation_count": 722,
        "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": 6042,
        "PM2.5": 6042,
        "NO2": 5275
      }
    },
    {
      "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": "43d5f78e52784836f34b4f6cf0be2459a7b467632006a6ed1b72e70a4a052d76",
      "byte_count": 540825,
      "retrieved_at_utc": "2026-09-11T12:54:42.673693+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": 6026,
            "accepted_numeric_observations": 6026,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4319,
              "P": 1707
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12088,
        "parsed_24_00_numeric_observation_count": 505,
        "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": 6062,
        "NO2": 6026
      }
    },
    {
      "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": "7782ba5bfd03d5a79d13c9bf55b735e7708af2a7ef2c0a0e154981411f2f1dae",
      "byte_count": 756427,
      "retrieved_at_utc": "2026-09-11T12:54:42.791723+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": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5453,
            "accepted_numeric_observations": 5453,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 225,
            "parsed_24_00_numeric_observations": 225,
            "status_flag_counts": {
              "R": 3988,
              "P": 1465
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17575,
        "parsed_24_00_numeric_observation_count": 729,
        "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": 6061,
        "PM2.5": 6061,
        "NO2": 5453
      }
    },
    {
      "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": "a6f2f1f9eb4db7f5d97631fe7e721054e46068ae92da1edcba5ebc37faecf9c8",
      "byte_count": 679534,
      "retrieved_at_utc": "2026-09-11T12:54:42.807851+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": 6046,
            "accepted_numeric_observations": 6046,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4323,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5973,
            "accepted_numeric_observations": 5973,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4254,
              "P": 1719
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6046,
            "accepted_numeric_observations": 6046,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4323,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18065,
        "parsed_24_00_numeric_observation_count": 752,
        "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": 6046,
        "PM2.5": 6046,
        "NO2": 5973
      }
    },
    {
      "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": "da73901f154ae807fddcea5f0e30805851217faf53dc26514380acb77d760e5d",
      "byte_count": 778458,
      "retrieved_at_utc": "2026-09-11T12:54:43.056191+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6031,
            "accepted_numeric_observations": 6031,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4311,
              "P": 1720
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18155,
        "parsed_24_00_numeric_observation_count": 755,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 6031
      }
    },
    {
      "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": "a46c21ab1d04a98cf15cb4ab56d6e6041e013a36e15f854fd5cc41e295df9679",
      "byte_count": 668427,
      "retrieved_at_utc": "2026-09-11T12:54:43.202150+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": 5949,
            "accepted_numeric_observations": 5949,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 4325,
              "P": 1624
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5795,
            "accepted_numeric_observations": 5795,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 243,
            "parsed_24_00_numeric_observations": 243,
            "status_flag_counts": {
              "P": 3658,
              "R": 2137
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5949,
            "accepted_numeric_observations": 5949,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 4325,
              "P": 1624
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17693,
        "parsed_24_00_numeric_observation_count": 737,
        "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": 5949,
        "PM2.5": 5949,
        "NO2": 5795
      }
    },
    {
      "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": "9fc13c9eb808c0d75f9f4760094a0bf995a3b0ab422fa9c5a0521418a65e485c",
      "byte_count": 492211,
      "retrieved_at_utc": "2026-09-11T12:54:43.254438+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": 5790,
            "accepted_numeric_observations": 5790,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4191,
              "P": 1599
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5790,
        "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",
        "Ozone",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2"
      ],
      "parsed_observation_counts": {
        "NO2": 5790
      }
    },
    {
      "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": "272c0fdad84dcd01d0331cf3593e59a309b37c0dad13cac70a53c65f94e477f6",
      "byte_count": 794407,
      "retrieved_at_utc": "2026-09-11T12:54:43.692974+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12132,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6066,
        "PM2.5": 6066
      }
    },
    {
      "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": "f966ab63823fbecda5928795331618eba0962eebb55bd193a00c49770d5827e1",
      "byte_count": 682972,
      "retrieved_at_utc": "2026-09-11T12:54:43.783500+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": 6024,
            "accepted_numeric_observations": 6024,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4300,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6030,
            "accepted_numeric_observations": 6030,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4312,
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6024,
            "accepted_numeric_observations": 6024,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4300,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18078,
        "parsed_24_00_numeric_observation_count": 753,
        "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": 6030,
        "PM10": 6024,
        "PM2.5": 6024
      }
    },
    {
      "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": "d88b98ea47e99b75187e8fb65f19dbfde243b680b18cf701ea3e4bef6e1c33c8",
      "byte_count": 687126,
      "retrieved_at_utc": "2026-09-11T12:54:43.894980+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6009,
            "accepted_numeric_observations": 6009,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4291,
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18141,
        "parsed_24_00_numeric_observation_count": 756,
        "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": 6066,
        "PM2.5": 6066,
        "NO2": 6009
      }
    },
    {
      "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": "5b850572b4436c803fca02b994bd5213f5d518a54ee1e829af65fc67b0fd0a8a",
      "byte_count": 379283,
      "retrieved_at_utc": "2026-09-11T12:54:44.007396+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": 6024,
            "accepted_numeric_observations": 6024,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4300,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6024,
            "accepted_numeric_observations": 6024,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4300,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12048,
        "parsed_24_00_numeric_observation_count": 502,
        "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": 6024,
        "PM2.5": 6024
      }
    },
    {
      "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": "b60fef121466d09af8e40bab92d238860fb1b63b6152ba5f57a47ba73dcd9738",
      "byte_count": 771675,
      "retrieved_at_utc": "2026-09-11T12:54:44.027844+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5889,
            "accepted_numeric_observations": 5889,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 246,
            "parsed_24_00_numeric_observations": 246,
            "status_flag_counts": {
              "R": 4178,
              "P": 1711
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18015,
        "parsed_24_00_numeric_observation_count": 750,
        "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": 6063,
        "PM2.5": 6063,
        "NO2": 5889
      }
    },
    {
      "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": "a5bc9eed6a72415a101cdc5132d022dd58e856fba0646de11de58c0b0fac6aa0",
      "byte_count": 731936,
      "retrieved_at_utc": "2026-09-11T12:54:44.030457+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 4807,
            "accepted_numeric_observations": 4807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 201,
            "parsed_24_00_numeric_observations": 201,
            "status_flag_counts": {
              "R": 3118,
              "P": 1689
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 16933,
        "parsed_24_00_numeric_observation_count": 705,
        "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": 6063,
        "PM2.5": 6063,
        "NO2": 4807
      }
    },
    {
      "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": "fdbab011ee30bc673fa76d6c7cf0562a4c4b998283c2f02a3737a5dfcc6c7f2f",
      "byte_count": 499472,
      "retrieved_at_utc": "2026-09-11T12:54:44.129088+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": 6003,
            "accepted_numeric_observations": 6003,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4309,
              "P": 1694
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6003,
        "parsed_24_00_numeric_observation_count": 251,
        "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": 6003
      }
    },
    {
      "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": "350bd9d0d2f3586dd887c76c20cd0c4a9254e2f8aad58cc4e206d9c081ff2c12",
      "byte_count": 491789,
      "retrieved_at_utc": "2026-09-11T12:54:44.234448+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": 5727,
            "accepted_numeric_observations": 5727,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 239,
            "parsed_24_00_numeric_observations": 239,
            "status_flag_counts": {
              "P": 3584,
              "R": 2143
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5727,
        "parsed_24_00_numeric_observation_count": 239,
        "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": 5727
      }
    },
    {
      "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": "b7c82e0de1c1354de6b78e6f58fe6f28ebbd49e5b2d3d1c83ddf55ae4cf1f9cc",
      "byte_count": 208092,
      "retrieved_at_utc": "2026-09-11T12:54:44.435142+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": 1718,
            "accepted_numeric_observations": 1718,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 72,
            "parsed_24_00_numeric_observations": 72,
            "status_flag_counts": {
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 1718,
            "accepted_numeric_observations": 1718,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 72,
            "parsed_24_00_numeric_observations": 72,
            "status_flag_counts": {
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 3436,
        "parsed_24_00_numeric_observation_count": 144,
        "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": 1718,
        "PM2.5": 1718
      }
    },
    {
      "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": "d09977123469e507a1b452bd294881688305ebed55973f195803316af378b563",
      "byte_count": 379894,
      "retrieved_at_utc": "2026-09-11T12:54:44.599343+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": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4337,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4337,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12122,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6061,
        "PM2.5": 6061
      }
    },
    {
      "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": "99f2ec375bfd2d6862e6230afe66f16dfc7c759237f2d5cfd3749174d7387386",
      "byte_count": 381030,
      "retrieved_at_utc": "2026-09-11T12:54:44.772148+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12132,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6066,
        "PM2.5": 6066
      }
    },
    {
      "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": "8f2b6c9c095322b2ee3f5d4aedfcb48856eda4d031bc80958d8d42e2300aa1bd",
      "byte_count": 395913,
      "retrieved_at_utc": "2026-09-11T12:54:44.885787+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": 5682,
            "accepted_numeric_observations": 5682,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 239,
            "parsed_24_00_numeric_observations": 239,
            "status_flag_counts": {
              "R": 4285,
              "P": 1397
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5682,
        "parsed_24_00_numeric_observation_count": 239,
        "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": 5682
      }
    },
    {
      "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": "306c05ba45d8ab8fb96dce34c261e343e8981ef4409d833781eddc951e63935b",
      "byte_count": 380715,
      "retrieved_at_utc": "2026-09-11T12:54:44.933449+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12126,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6063,
        "PM2.5": 6063
      }
    },
    {
      "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": "4c550e294a823d0221f617338753722d2b97af99b71a32cc5b17374afe411629",
      "byte_count": 548248,
      "retrieved_at_utc": "2026-09-11T12:54:44.982330+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": 5992,
            "accepted_numeric_observations": 5992,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4297,
              "P": 1695
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12057,
        "parsed_24_00_numeric_observation_count": 503,
        "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": 6065,
        "NO2": 5992
      }
    },
    {
      "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": "841318a0b373624415b99cdf088afa8b7f7e5d40aba659dbfe88d292fd6fb0ae",
      "byte_count": 379111,
      "retrieved_at_utc": "2026-09-11T12:54:45.122024+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": 253,
        "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": "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": "262cf3822345611e408627de3662be1b53f900357094c75a1f9682b8111dce79",
      "byte_count": 775251,
      "retrieved_at_utc": "2026-09-11T12:54:45.167555+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5997,
            "accepted_numeric_observations": 5997,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4301,
              "P": 1696
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18129,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6066,
        "PM2.5": 6066,
        "NO2": 5997
      }
    },
    {
      "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": "a5a8c35d0330c3ab236247334f03df8b0965e588623be09fe45f8ef770890156",
      "byte_count": 752196,
      "retrieved_at_utc": "2026-09-11T12:54:45.452090+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5371,
            "accepted_numeric_observations": 5371,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 224,
            "parsed_24_00_numeric_observations": 224,
            "status_flag_counts": {
              "R": 3671,
              "P": 1700
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17495,
        "parsed_24_00_numeric_observation_count": 728,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 5371
      }
    },
    {
      "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": "b872b4a2eab3fa25fdd23aa4f7a029ab4ec075dbe794e97b5923c9efdee35533",
      "byte_count": 184296,
      "retrieved_at_utc": "2026-09-11T12:54:45.516809+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": 253,
        "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": "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": "c0047ade4f22f31e592150be97b90eaab129582b03e7befae545cf0656bed893",
      "byte_count": 259259,
      "retrieved_at_utc": "2026-09-11T12:54:45.617394+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": 5884,
            "accepted_numeric_observations": 5884,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 246,
            "parsed_24_00_numeric_observations": 246,
            "status_flag_counts": {
              "R": 4160,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5884,
        "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": [
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM2.5": 5884
      }
    },
    {
      "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": "72c7b5ae62a60f4e88afe9f826fb739eb5594e4abed77900ffefbbbad4b27ce1",
      "byte_count": 380912,
      "retrieved_at_utc": "2026-09-11T12:54:45.994551+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": 6067,
            "accepted_numeric_observations": 6067,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6067,
            "accepted_numeric_observations": 6067,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12134,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6067,
        "PM2.5": 6067
      }
    },
    {
      "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": "69431d385dc9dd16c8637d8608d2af94603ac00e2c7628f6c5d42df5a4a05fa5",
      "byte_count": 858200,
      "retrieved_at_utc": "2026-09-11T12:54:46.246122+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": 6036,
            "accepted_numeric_observations": 6036,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4339,
              "P": 1697
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5859,
            "accepted_numeric_observations": 5859,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4172,
              "P": 1687
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6036,
            "accepted_numeric_observations": 6036,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4339,
              "P": 1697
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17931,
        "parsed_24_00_numeric_observation_count": 747,
        "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": 6036,
        "PM2.5": 6036,
        "NO2": 5859
      }
    },
    {
      "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": "3fcee74f9887449ceaae3bcd41f6e9e7f10d8b58344d01d251f33327af628b5b",
      "byte_count": 822237,
      "retrieved_at_utc": "2026-09-11T12:54:46.278456+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": 5807,
            "accepted_numeric_observations": 5807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4084,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5807,
            "accepted_numeric_observations": 5807,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4084,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11614,
        "parsed_24_00_numeric_observation_count": 484,
        "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": 5807,
        "PM2.5": 5807
      }
    },
    {
      "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": "8b4779802020d4ace6b4f976a14dd640e7901c1d000788b69e41a53975760be4",
      "byte_count": 243923,
      "retrieved_at_utc": "2026-09-11T12:54:46.291886+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": 6067,
            "accepted_numeric_observations": 6067,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4341,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6067,
        "parsed_24_00_numeric_observation_count": 253,
        "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": 6067
      }
    },
    {
      "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": "7d73fea63d171eb8bded410510cb451ab3eaa3ba2541586b03dfe6d7a0c741c0",
      "byte_count": 783355,
      "retrieved_at_utc": "2026-09-11T12:54:46.302661+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": 6058,
            "accepted_numeric_observations": 6058,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4336,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6004,
            "accepted_numeric_observations": 6004,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4307,
              "P": 1697
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6058,
            "accepted_numeric_observations": 6058,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4336,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18120,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6058,
        "PM2.5": 6058,
        "NO2": 6004
      }
    },
    {
      "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": "2026c34803d63c5c875232d1c4ca7143d0a39a79366b69bcc8de5449ee181360",
      "byte_count": 782748,
      "retrieved_at_utc": "2026-09-11T12:54:46.313073+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": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6041,
            "accepted_numeric_observations": 6041,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4323,
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18171,
        "parsed_24_00_numeric_observation_count": 756,
        "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": 6065,
        "PM2.5": 6065,
        "NO2": 6041
      }
    },
    {
      "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": "48f11aeffea52a5dd8e77e0a08a47fd651a710fd67bf094ae9082a5dad909f73",
      "byte_count": 643047,
      "retrieved_at_utc": "2026-09-11T12:54:46.439967+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": 5988,
            "accepted_numeric_observations": 5988,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4294,
              "P": 1694
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6065,
            "accepted_numeric_observations": 6065,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12053,
        "parsed_24_00_numeric_observation_count": 502,
        "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": 6065,
        "NO2": 5988
      }
    },
    {
      "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": "c51b67b4bd849ae30268e28cf25bb3a31995d8e42d8862c9f926a2fd2098b6d5",
      "byte_count": 772827,
      "retrieved_at_utc": "2026-09-11T12:54:46.652578+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": 6050,
            "accepted_numeric_observations": 6050,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1710
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6022,
            "accepted_numeric_observations": 6022,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4313,
              "P": 1709
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6050,
            "accepted_numeric_observations": 6050,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1710
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18122,
        "parsed_24_00_numeric_observation_count": 752,
        "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": 6050,
        "PM2.5": 6050,
        "NO2": 6022
      }
    },
    {
      "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": "b3eeb5dee4f1861db3668036afe25f63613af92449329b79f08ce659eb6f19cc",
      "byte_count": 638110,
      "retrieved_at_utc": "2026-09-11T12:54:46.975816+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": 5795,
            "accepted_numeric_observations": 5795,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4197,
              "P": 1598
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5516,
            "accepted_numeric_observations": 5516,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 230,
            "parsed_24_00_numeric_observations": 230,
            "status_flag_counts": {
              "R": 4279,
              "P": 1237
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5615,
            "accepted_numeric_observations": 5615,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 238,
            "parsed_24_00_numeric_observations": 238,
            "status_flag_counts": {
              "R": 4072,
              "P": 1543
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 16926,
        "parsed_24_00_numeric_observation_count": 710,
        "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": 5795,
        "PM2.5": 5615,
        "NO2": 5516
      }
    },
    {
      "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": "1dab9f945e809c9907b02ab3b791a7ae69c433d2c49a3811880116f9e291cd9d",
      "byte_count": 372366,
      "retrieved_at_utc": "2026-09-11T12:54:47.138240+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": 5780,
            "accepted_numeric_observations": 5780,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 241,
            "parsed_24_00_numeric_observations": 241,
            "status_flag_counts": {
              "P": 5780
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5780,
            "accepted_numeric_observations": 5780,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 241,
            "parsed_24_00_numeric_observations": 241,
            "status_flag_counts": {
              "P": 5780
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11560,
        "parsed_24_00_numeric_observation_count": 482,
        "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": 5780,
        "PM2.5": 5780
      }
    },
    {
      "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": "dfafd3672551619b2a90a1063f23f4d1a61cf2579eb530692384920e41a47af7",
      "byte_count": 380382,
      "retrieved_at_utc": "2026-09-11T12:54:47.271510+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4337,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4337,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12124,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6062,
        "PM2.5": 6062
      }
    },
    {
      "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": "976f73d15a94762a1f89a8c2ff18378965d79fdaeddf64145010df198c971ffc",
      "byte_count": 483008,
      "retrieved_at_utc": "2026-09-11T12:54:47.310124+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": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4337,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12120,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6060,
        "PM2.5": 6060
      }
    },
    {
      "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": "bbd8caa64a2a912d14c080e703a0b10476b623bb4a0d65b9248307319019a1e8",
      "byte_count": 364861,
      "retrieved_at_utc": "2026-09-11T12:54:47.310186+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": 5097,
            "accepted_numeric_observations": 5097,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 213,
            "parsed_24_00_numeric_observations": 213,
            "status_flag_counts": {
              "R": 3380,
              "P": 1717
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5097,
        "parsed_24_00_numeric_observation_count": 213,
        "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": 5097
      }
    },
    {
      "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": "8d330f38303488447c533330f733ce4bbe504098193a0119494765688b924547",
      "byte_count": 767457,
      "retrieved_at_utc": "2026-09-11T12:54:47.377414+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5735,
            "accepted_numeric_observations": 5735,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 239,
            "parsed_24_00_numeric_observations": 239,
            "status_flag_counts": {
              "R": 4297,
              "P": 1438
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1721
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17859,
        "parsed_24_00_numeric_observation_count": 743,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 5735
      }
    },
    {
      "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": "74cab33f7d6567d649df0a8f714a685fb87092b028776ec95a45686e349c44c2",
      "byte_count": 770368,
      "retrieved_at_utc": "2026-09-11T12:54:47.521429+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": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1719
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5863,
            "accepted_numeric_observations": 5863,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 245,
            "parsed_24_00_numeric_observations": 245,
            "status_flag_counts": {
              "R": 4146,
              "P": 1717
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1719
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17983,
        "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",
        "Ozone",
        "status",
        "unit",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM10",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "PM10": 6060,
        "PM2.5": 6060,
        "NO2": 5863
      }
    },
    {
      "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": "70f765aef4f309d60ebe1ca5628e8cd660bba94c556e480b59c77626187b0e46",
      "byte_count": 735754,
      "retrieved_at_utc": "2026-09-11T12:54:47.704866+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": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1720
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5011,
            "accepted_numeric_observations": 5011,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 209,
            "parsed_24_00_numeric_observations": 209,
            "status_flag_counts": {
              "R": 3298,
              "P": 1713
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1720
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17131,
        "parsed_24_00_numeric_observation_count": 713,
        "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": 6060,
        "PM2.5": 6060,
        "NO2": 5011
      }
    },
    {
      "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": "a227d124830e0b90f8f8fd38f3c132786fc09c745ced9431b0da0f159b7a50cc",
      "byte_count": 677244,
      "retrieved_at_utc": "2026-09-11T12:54:47.971310+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": 6033,
            "accepted_numeric_observations": 6033,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1693
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5932,
            "accepted_numeric_observations": 5932,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4252,
              "P": 1680
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6033,
            "accepted_numeric_observations": 6033,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4340,
              "P": 1693
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17998,
        "parsed_24_00_numeric_observation_count": 750,
        "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": 6033,
        "PM2.5": 6033,
        "NO2": 5932
      }
    },
    {
      "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": "492efea64b92db1b7423ba5f63b30c3e57c1eec64308575c9e20e2b5d229e951",
      "byte_count": 244027,
      "retrieved_at_utc": "2026-09-11T12:54:48.050253+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1726
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6066,
        "parsed_24_00_numeric_observation_count": 253,
        "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": 6066
      }
    },
    {
      "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": "e531f0c667590af51fe392ae2555151e9363eb4d2a8b9fa7f839c4b661cea2c5",
      "byte_count": 537640,
      "retrieved_at_utc": "2026-09-11T12:54:48.117818+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": 5675,
            "accepted_numeric_observations": 5675,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 238,
            "parsed_24_00_numeric_observations": 238,
            "status_flag_counts": {
              "R": 4159,
              "P": 1516
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6025,
            "accepted_numeric_observations": 6025,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4309,
              "P": 1716
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11700,
        "parsed_24_00_numeric_observation_count": 490,
        "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": 6025,
        "PM10": 5675
      }
    },
    {
      "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": "3ce93ba75d592697b2047a7fe77fa3c5d4e0dd5d1496ccab3d2f952204685ebe",
      "byte_count": 381791,
      "retrieved_at_utc": "2026-09-11T12:54:48.187251+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4337,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4337,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12124,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6062,
        "PM2.5": 6062
      }
    },
    {
      "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": "e2d792ac981f8b880bb3c37586bef1e62696638baf36068bf24825baa3300bd3",
      "byte_count": 775645,
      "retrieved_at_utc": "2026-09-11T12:54:48.444381+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": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5979,
            "accepted_numeric_observations": 5979,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "R": 4297,
              "P": 1682
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18107,
        "parsed_24_00_numeric_observation_count": 755,
        "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": 6064,
        "PM2.5": 6064,
        "NO2": 5979
      }
    },
    {
      "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": "9063defd4f22dc4d2ff2b04fd80ccf8088c8bfc66179f6b43ec3bb7a16f78d9b",
      "byte_count": 680028,
      "retrieved_at_utc": "2026-09-11T12:54:48.457225+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4342,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5853,
            "accepted_numeric_observations": 5853,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4237,
              "P": 1616
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4342,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17985,
        "parsed_24_00_numeric_observation_count": 752,
        "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": 6066,
        "PM2.5": 6066,
        "NO2": 5853
      }
    },
    {
      "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": "391f76520f5146f3f493e7268490a150d7a975ba6d40f0aa8dc3c86de760428f",
      "byte_count": 869970,
      "retrieved_at_utc": "2026-09-11T12:54:48.648282+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": 5955,
            "accepted_numeric_observations": 5955,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4233,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5991,
            "accepted_numeric_observations": 5991,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4300,
              "P": 1691
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5955,
            "accepted_numeric_observations": 5955,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4233,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17901,
        "parsed_24_00_numeric_observation_count": 746,
        "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": 5991,
        "PM10": 5955,
        "PM2.5": 5955
      }
    },
    {
      "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": "f6eab001cac321b26f4bea3cc35f6acb3e13ad732eae6cf75f204f938fc6fcea",
      "byte_count": 679153,
      "retrieved_at_utc": "2026-09-11T12:54:48.711655+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": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5973,
            "accepted_numeric_observations": 5973,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 250,
            "parsed_24_00_numeric_observations": 250,
            "status_flag_counts": {
              "R": 4286,
              "P": 1687
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6063,
            "accepted_numeric_observations": 6063,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4339,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18099,
        "parsed_24_00_numeric_observation_count": 754,
        "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": 6063,
        "PM2.5": 6063,
        "NO2": 5973
      }
    },
    {
      "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": "27fb83a4f050c34513ab78434beb83e4126b57cb257ccf6042d5e7c775ec0140",
      "byte_count": 382459,
      "retrieved_at_utc": "2026-09-11T12:54:48.841408+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": 6069,
            "accepted_numeric_observations": 6069,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4342,
              "P": 1727
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6069,
            "accepted_numeric_observations": 6069,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4342,
              "P": 1727
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12138,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6069,
        "PM2.5": 6069
      }
    },
    {
      "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": "5592b5907b3f6d0d2ac2fa6c52d1a71117635c67901d24d33c7ad96c7c7624d4",
      "byte_count": 517176,
      "retrieved_at_utc": "2026-09-11T12:54:48.962843+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": 5787,
            "accepted_numeric_observations": 5787,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 241,
            "parsed_24_00_numeric_observations": 241,
            "status_flag_counts": {
              "R": 4133,
              "P": 1654
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5838,
            "accepted_numeric_observations": 5838,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 243,
            "parsed_24_00_numeric_observations": 243,
            "status_flag_counts": {
              "R": 4226,
              "P": 1612
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11625,
        "parsed_24_00_numeric_observation_count": 484,
        "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": 5838,
        "NO2": 5787
      }
    },
    {
      "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": "f287d606737864f9a47afb3c687ec923ea3d68bf71a7433654e24b29825893bb",
      "byte_count": 380613,
      "retrieved_at_utc": "2026-09-11T12:54:48.970766+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": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4338,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6061,
            "accepted_numeric_observations": 6061,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4338,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12122,
        "parsed_24_00_numeric_observation_count": 504,
        "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": 6061,
        "PM2.5": 6061
      }
    },
    {
      "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": "c4a8bd425a1fe4ac88e672e27d41af7368af0c6efe864434832f0b14b32fafaa",
      "byte_count": 347885,
      "retrieved_at_utc": "2026-09-11T12:54:49.026338+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": 4626,
            "accepted_numeric_observations": 4626,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 194,
            "parsed_24_00_numeric_observations": 194,
            "status_flag_counts": {
              "R": 2958,
              "P": 1668
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 4626,
        "parsed_24_00_numeric_observation_count": 194,
        "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": 4626
      }
    },
    {
      "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": "59d1ce63bd8019ce3c3aad431782ed1d6d0a1a271597d3931922bcb29a60731a",
      "byte_count": 232370,
      "retrieved_at_utc": "2026-09-11T12:54:49.187169+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": 2331,
            "accepted_numeric_observations": 2331,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 98,
            "parsed_24_00_numeric_observations": 98,
            "status_flag_counts": {
              "P": 1728,
              "R": 603
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 2331,
            "accepted_numeric_observations": 2331,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 98,
            "parsed_24_00_numeric_observations": 98,
            "status_flag_counts": {
              "P": 1728,
              "R": 603
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 4662,
        "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": 2331,
        "PM2.5": 2331
      }
    },
    {
      "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": "b1ef7cec1583a1f38a2e11200931c9106b0de2986365f5d61d37307eecc5fde3",
      "byte_count": 207352,
      "retrieved_at_utc": "2026-09-11T12:54:49.370052+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": 4245,
            "accepted_numeric_observations": 4245,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 178,
            "parsed_24_00_numeric_observations": 178,
            "status_flag_counts": {
              "R": 2361,
              "P": 1884
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 4245,
        "parsed_24_00_numeric_observation_count": 178,
        "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": 4245
      }
    },
    {
      "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": "c05958225499c8bb917114949fe1a4c9f17c5908ea5baf65800abd0619015628",
      "byte_count": 612405,
      "retrieved_at_utc": "2026-09-11T12:54:49.431819+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": 5979,
            "accepted_numeric_observations": 5979,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4293,
              "P": 1686
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5721,
            "accepted_numeric_observations": 5721,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 240,
            "parsed_24_00_numeric_observations": 240,
            "status_flag_counts": {
              "R": 4204,
              "P": 1517
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11700,
        "parsed_24_00_numeric_observation_count": 492,
        "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": 5979,
        "PM2.5": 5721
      }
    },
    {
      "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": "f86eb3a9c544d9ac77f85be280290e35a995ebb15e7caea3cd6f9daa0dc28324",
      "byte_count": 380123,
      "retrieved_at_utc": "2026-09-11T12:54:49.541496+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": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4338,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6060,
            "accepted_numeric_observations": 6060,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4338,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12120,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6060,
        "PM2.5": 6060
      }
    },
    {
      "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": "5995fe2c4c875ca2d7b91f8a2ea28fca2381c9e22828bee87f8f31394a7f49d7",
      "byte_count": 221027,
      "retrieved_at_utc": "2026-09-11T12:54:49.669652+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": 5690,
            "accepted_numeric_observations": 5690,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4109,
              "P": 1581
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5690,
        "parsed_24_00_numeric_observation_count": 242,
        "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": 5690
      }
    },
    {
      "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": "941efa720cb3b1d4fb93b390d0c1e299b39f22bee8e80ce1dec3eebb9c8ee53a",
      "byte_count": 753867,
      "retrieved_at_utc": "2026-09-11T12:54:49.846359+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": 5668,
            "accepted_numeric_observations": 5668,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 237,
            "parsed_24_00_numeric_observations": 237,
            "status_flag_counts": {
              "P": 3597,
              "R": 2071
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5980,
            "accepted_numeric_observations": 5980,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 251,
            "parsed_24_00_numeric_observations": 251,
            "status_flag_counts": {
              "P": 3857,
              "R": 2123
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5762,
            "accepted_numeric_observations": 5762,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "P": 3715,
              "R": 2047
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17410,
        "parsed_24_00_numeric_observation_count": 730,
        "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": 5980,
        "PM2.5": 5762,
        "PM10": 5668
      }
    },
    {
      "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": "be0f61be3518bcc80906580b965140e32ff67ba87de3bbecb9594380b2a4b5da",
      "byte_count": 516193,
      "retrieved_at_utc": "2026-09-11T12:54:49.984443+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": 6037,
            "accepted_numeric_observations": 6037,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4320,
              "P": 1717
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5589,
            "accepted_numeric_observations": 5589,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 236,
            "parsed_24_00_numeric_observations": 236,
            "status_flag_counts": {
              "R": 4047,
              "P": 1542
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11626,
        "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",
        "PM<sub>2.5</sub> particulate matter (Hourly measured)",
        "status",
        "unit"
      ],
      "parsed_pollutants": [
        "NO2",
        "PM2.5"
      ],
      "parsed_observation_counts": {
        "NO2": 6037,
        "PM2.5": 5589
      }
    },
    {
      "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": "7ad51fa3b4b3e2be7eeccfa8df2424eedada1e5b5c2c497fb4269ad4271287d0",
      "byte_count": 673938,
      "retrieved_at_utc": "2026-09-11T12:54:49.996587+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": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5786,
            "accepted_numeric_observations": 5786,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 242,
            "parsed_24_00_numeric_observations": 242,
            "status_flag_counts": {
              "R": 4132,
              "P": 1654
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1723
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17914,
        "parsed_24_00_numeric_observation_count": 746,
        "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": 6064,
        "PM2.5": 6064,
        "NO2": 5786
      }
    },
    {
      "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": "fe932e33c1ed7bb3768b2cf4bc52a98f12acc82b2f15bef035b511f76aec69e8",
      "byte_count": 498727,
      "retrieved_at_utc": "2026-09-11T12:54:50.151844+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": 5936,
            "accepted_numeric_observations": 5936,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 249,
            "parsed_24_00_numeric_observations": 249,
            "status_flag_counts": {
              "R": 4291,
              "P": 1645
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 5936,
        "parsed_24_00_numeric_observation_count": 249,
        "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": 5936
      }
    },
    {
      "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": "8c6e88018ca92a8a21e35bc28858c281ea2d3cc2e1eea42cc31bd25480177110",
      "byte_count": 380892,
      "retrieved_at_utc": "2026-09-11T12:54:50.193617+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": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6064,
            "accepted_numeric_observations": 6064,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 253,
            "parsed_24_00_numeric_observations": 253,
            "status_flag_counts": {
              "R": 4340,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 12128,
        "parsed_24_00_numeric_observation_count": 506,
        "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": 6064,
        "PM2.5": 6064
      }
    },
    {
      "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": "b93a58ff0ccdc2f441bf5f8158fc9efada8532bb6ee24a6f584a78c3e948b9f8",
      "byte_count": 774829,
      "retrieved_at_utc": "2026-09-11T12:54:50.419280+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": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6040,
            "accepted_numeric_observations": 6040,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4322,
              "P": 1718
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6066,
            "accepted_numeric_observations": 6066,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4341,
              "P": 1725
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18172,
        "parsed_24_00_numeric_observation_count": 756,
        "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": 6066,
        "PM2.5": 6066,
        "NO2": 6040
      }
    },
    {
      "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": "5c015081e5a966e695f270648d85d36aac17ca988a895eb813c72abad6763903",
      "byte_count": 400797,
      "retrieved_at_utc": "2026-09-11T12:54:50.627294+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": 6024,
            "accepted_numeric_observations": 6024,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4313,
              "P": 1711
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 6024,
        "parsed_24_00_numeric_observation_count": 252,
        "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": 6024
      }
    },
    {
      "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": "2f7b58315b14a1ef1cbbdb99326568a48689b5978c05204b6317c56bdfb754b7",
      "byte_count": 359810,
      "retrieved_at_utc": "2026-09-11T12:54:50.652124+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": 5805,
            "accepted_numeric_observations": 5805,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 241,
            "parsed_24_00_numeric_observations": 241,
            "status_flag_counts": {
              "R": 4209,
              "P": 1596
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5665,
            "accepted_numeric_observations": 5665,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 236,
            "parsed_24_00_numeric_observations": 236,
            "status_flag_counts": {
              "R": 4134,
              "P": 1531
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 11470,
        "parsed_24_00_numeric_observation_count": 477,
        "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": 5805,
        "PM2.5": 5665
      }
    },
    {
      "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": "efa57eef648e00cfa7f2a84ec1c2069218581cbbd46ded77b79e7d8a95dc4376",
      "byte_count": 782568,
      "retrieved_at_utc": "2026-09-11T12:54:50.673983+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": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 6042,
            "accepted_numeric_observations": 6042,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4326,
              "P": 1716
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 6062,
            "accepted_numeric_observations": 6062,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 252,
            "parsed_24_00_numeric_observations": 252,
            "status_flag_counts": {
              "R": 4340,
              "P": 1722
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 18166,
        "parsed_24_00_numeric_observation_count": 756,
        "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": 6062,
        "PM2.5": 6062,
        "NO2": 6042
      }
    },
    {
      "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": "761e1321e52d41461d6cd888a875ddb90ec799ec81365c7bd16a7a763602177c",
      "byte_count": 768654,
      "retrieved_at_utc": "2026-09-11T12:54:51.001182+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": 5965,
            "accepted_numeric_observations": 5965,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4241,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          },
          "NO2": {
            "source_numeric_observations": 5939,
            "accepted_numeric_observations": 5939,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 247,
            "parsed_24_00_numeric_observations": 247,
            "status_flag_counts": {
              "R": 4243,
              "P": 1696
            },
            "hour_ending_reconciliation_passed": true
          },
          "PM2.5": {
            "source_numeric_observations": 5965,
            "accepted_numeric_observations": 5965,
            "unaccepted_status_observations": 0,
            "source_24_00_numeric_observations": 248,
            "parsed_24_00_numeric_observations": 248,
            "status_flag_counts": {
              "R": 4241,
              "P": 1724
            },
            "hour_ending_reconciliation_passed": true
          }
        },
        "source_24_00_row_count": 253,
        "parsed_numeric_observation_count": 17869,
        "parsed_24_00_numeric_observation_count": 743,
        "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": 5965,
        "PM2.5": 5965,
        "NO2": 5939
      }
    }
  ],
  "time_basis_assurance": {
    "schema": "aq26_england_time_basis_assurance_v1",
    "generated_at_utc": "2026-09-11T12:54:52.846418+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": 36179,
    "parsed_24_00_pollutant_observations": 78179,
    "source_numeric_observations": 1874841,
    "quality_accepted_observations": 1874841,
    "excluded_unrecognised_status_observations": 0,
    "status_flag_counts": {
      "P": 591738,
      "R": 1283103
    },
    "accepted_status_flags": {
      "R": "ratified",
      "P": "provisional",
      "P*": "as_supplied"
    },
    "errors": []
  },
  "software_provenance": {
    "git_commit": "1ca0bfc9d65689b9ef7f1f57099c14a86c6ab4cb",
    "github_run_id": "34600962337",
    "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": "457c7e57b531aec3fd69c545ced53ec9d126d1eea6fa56d3c26c7c1280c7921f",
  "station_registry_geojson_sha256": "2b14c7176ea1d4d6ba32442e5a8c6dc9f10a431e23e5cc1c9944765fce63c7dd",
  "data_dictionary_sha256": "c87ec838b00395c09176a99a4964cdec46c4acf82f6035b8dc70d3816729cbdb"
}