{
  "source": "https://gml.noaa.gov/grad/solcalc/solareqns.PDF",
  "label": "NOAA approximate solar-position derivative; not observed street lighting or visibility",
  "timezone": "America/Los_Angeles",
  "clock_policy": "Invalid clocks and DST-ambiguous/nonexistent times remain unknown; no invented UTC assignment.",
  "thresholds_deg": {
    "daylight_min": -0.833,
    "civil_twilight_min": -6
  },
  "threshold_sensitivity": "Rows within 0.5 degrees of either threshold are flagged for sensitivity checks.",
  "limits": "No local terrain/obstruction, cloud cover, weather, street lights or atmospheric refraction observations. Solar phase describes an estimated astronomical condition, not travel exposure.",
  "source_crash_events": 57785,
  "frozen_receipts": [
    {
      "year": 2020,
      "sha256": "193dce597b7b2b3fde32d4a6af39b10fd451f2bb324b69d0571a4def0149f792",
      "url": "https://remoteapps.wsdot.wa.gov/highwaysafety/collision/data/portal/public/Api/CrashDataPortalService/GetPublicPortalData?rptCategory=Summary+Reports&rptName=Total+Crashes&locationType=&locationName=&jurisdiction=&reportStartDate=20200101&reportEndDate=20201231"
    },
    {
      "year": 2021,
      "sha256": "5a84c02555543bbea3b70858b1ae9051a4da326be4c87db37b9dac0945eb7340",
      "url": "https://remoteapps.wsdot.wa.gov/highwaysafety/collision/data/portal/public/Api/CrashDataPortalService/GetPublicPortalData?rptCategory=Summary+Reports&rptName=Total+Crashes&locationType=&locationName=&jurisdiction=&reportStartDate=20210101&reportEndDate=20211231"
    },
    {
      "year": 2022,
      "sha256": "67c52cea53b4c638f2a29904f22b5d6e3bdd2559f66fecd1876198a7b20205fe",
      "url": "https://remoteapps.wsdot.wa.gov/highwaysafety/collision/data/portal/public/Api/CrashDataPortalService/GetPublicPortalData?rptCategory=Summary+Reports&rptName=Total+Crashes&locationType=&locationName=&jurisdiction=&reportStartDate=20220101&reportEndDate=20221231"
    },
    {
      "year": 2023,
      "sha256": "fbb90b3237a5ea2e787144ab9b05dbe456967debdc94ef9980874f3d7be983e0",
      "url": "https://remoteapps.wsdot.wa.gov/highwaysafety/collision/data/portal/public/Api/CrashDataPortalService/GetPublicPortalData?rptCategory=Summary+Reports&rptName=Total+Crashes&locationType=&locationName=&jurisdiction=&reportStartDate=20230101&reportEndDate=20231231"
    },
    {
      "year": 2024,
      "sha256": "69f3c5f5268189a4479efdd8eefbb318b7e80cce5543c7229c928de1e9331fab",
      "url": "https://remoteapps.wsdot.wa.gov/highwaysafety/collision/data/portal/public/Api/CrashDataPortalService/GetPublicPortalData?rptCategory=Summary+Reports&rptName=Total+Crashes&locationType=&locationName=&jurisdiction=&reportStartDate=20240101&reportEndDate=20241231"
    }
  ],
  "unknown_solar_events": 10
}