{
  "prepared": "2026-09-05",
  "station": "E304570",
  "status": "actually_acquired",
  "selected_native_dates": [
    "2025-05-01",
    "2025-05-02",
    "2025-05-03"
  ],
  "hour_ending_timestamps_pst": "2025-05-01 01:00 through 2025-05-04 00:00 inclusive",
  "interval_start_pst": "2025-05-01 00:00",
  "interval_end_pst": "2025-05-04 00:00",
  "rows": 432,
  "original_rows_reconfirmed": 426,
  "additional_boundary_rows": 6,
  "provenance": [
    {
      "parameter": "NO",
      "source_url": "ftp://ftp.env.gov.bc.ca/pub/outgoing/AIR/AnnualSummary/2025/NO.csv",
      "source_bytes": 85313107,
      "window_offset": 64853316,
      "window_bytes": 65536,
      "window_sha256": "2ee890caf5774194697b0890f76e546e79c23ea9305b170e4199013e4725c115",
      "original_rows_reconfirmed": 71,
      "added_hour_end_pst": "2025-05-04 00:00",
      "rows": 72
    },
    {
      "parameter": "NO2",
      "source_url": "ftp://ftp.env.gov.bc.ca/pub/outgoing/AIR/AnnualSummary/2025/NO2.csv",
      "source_bytes": 85891472,
      "window_offset": 65290492,
      "window_bytes": 65536,
      "window_sha256": "83bcd377c22eeb0ac779833ec74580444a403ab4512631507f7fda4c66bd30fe",
      "original_rows_reconfirmed": 71,
      "added_hour_end_pst": "2025-05-04 00:00",
      "rows": 72
    },
    {
      "parameter": "NOx",
      "source_url": "ftp://ftp.env.gov.bc.ca/pub/outgoing/AIR/AnnualSummary/2025/NOx.csv",
      "source_bytes": 85895912,
      "window_offset": 65293807,
      "window_bytes": 65536,
      "window_sha256": "8adabf9bfb839d40675a2952695fb31cf0d140ecdab86037291cde1bdb0ab9af",
      "original_rows_reconfirmed": 71,
      "added_hour_end_pst": "2025-05-04 00:00",
      "rows": 72
    },
    {
      "parameter": "O3",
      "source_url": "ftp://ftp.env.gov.bc.ca/pub/outgoing/AIR/AnnualSummary/2025/O3.csv",
      "source_bytes": 76086838,
      "window_offset": 57152026,
      "window_bytes": 65536,
      "window_sha256": "2517e964d4175ecf6d8ec551714af303f11accc5f007e4f6c1d13bb7e33f45c8",
      "original_rows_reconfirmed": 71,
      "added_hour_end_pst": "2025-05-04 00:00",
      "rows": 72
    },
    {
      "parameter": "PM25",
      "source_url": "ftp://ftp.env.gov.bc.ca/pub/outgoing/AIR/AnnualSummary/2025/PM25.csv",
      "source_bytes": 107266998,
      "window_offset": 88165519,
      "window_bytes": 65536,
      "window_sha256": "04723aee7d276ec25fbe2eecc535b7d684925618714768bdf0d8ef99acccb9eb",
      "original_rows_reconfirmed": 71,
      "added_hour_end_pst": "2025-05-04 00:00",
      "rows": 72
    },
    {
      "parameter": "SO2",
      "source_url": "ftp://ftp.env.gov.bc.ca/pub/outgoing/AIR/AnnualSummary/2025/SO2.csv",
      "source_bytes": 73594181,
      "window_offset": 53217849,
      "window_bytes": 65536,
      "window_sha256": "a52c41c5345fd74d3b1eebe6238a75912d3e1ba19f94197e0cbd61786f68717a",
      "original_rows_reconfirmed": 71,
      "added_hour_end_pst": "2025-05-04 00:00",
      "rows": 72
    }
  ],
  "csv_sha256": "2c71061e69699ee1a6a557fbaf3b56a049e930017d6e991e0b9a77b749eb1d1f",
  "original_seed_preserved": true,
  "missing_values": "Provider NA preserved; no filling",
  "quality": "Provider verified annual archive; no per-row QA field supplied",
  "purpose": "Complete three native calendar-day intervals; no attribution or representative-background claim",
  "primary_time_convention": "https://www2.gov.bc.ca/assets/gov/environment/air-land-water/air/reports-pub/aqhi_network_review.pdf"
}