docsadvancederror-distribution

Error Distribution

GET/api/v1/accuracy/error-distribution

Histogram of absolute error in 1°F buckets (0-1, 1-2, 2-3, 3-4, 4-5, 5+). Shows how errors are distributed — e.g. '28% of KLAX forecasts miss by less than 1°F'.

Parameters

Name	Type	Required	Description
`station_id`	string	required	ICAO station identifier
`days`	integer	optional	Rolling window Default: 90
`metric`	string	optional	high (default) or low — daily high vs daily low verification Default: high

Response Fields

Field	Type	Description
`buckets`	array	Array of { range, count, pct }
`verification_pairs`	integer	Total pairs

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cURL

curl -s -H "Authorization: Bearer $API_KEY" "https://api.deltadaemon.com/api/v1/accuracy/error-distribution?station_id=KLAX&days=90"

JSON

{
  "success": true,
  "data": {
    "station_id": "KLAX",
    "city_name": "Los Angeles",
    "buckets": [
      {"range": "0-1°F", "count": 24, "pct": 28.2},
      {"range": "1-2°F", "count": 18, "pct": 21.2},
      {"range": "2-3°F", "count": 15, "pct": 17.6},
      {"range": "3-4°F", "count": 12, "pct": 14.1},
      {"range": "4-5°F", "count": 8, "pct": 9.4},
      {"range": "5+°F", "count": 8, "pct": 9.4}
    ],
    "verification_pairs": 85,
    "unique_days": 30
  },
  "metadata": {
    "generated_at": "2026-03-01T12:00:00Z",
    "days_analyzed": 90,
    "station_id": "KLAX",
    "query_time_ms": 4
  }
}

cURL

curl -s -H "Authorization: Bearer $API_KEY" "https://api.deltadaemon.com/api/v1/accuracy/error-distribution?station_id=KLAX&days=90"

JSON

{
  "success": true,
  "data": {
    "station_id": "KLAX",
    "city_name": "Los Angeles",
    "buckets": [
      {"range": "0-1°F", "count": 24, "pct": 28.2},
      {"range": "1-2°F", "count": 18, "pct": 21.2},
      {"range": "2-3°F", "count": 15, "pct": 17.6},
      {"range": "3-4°F", "count": 12, "pct": 14.1},
      {"range": "4-5°F", "count": 8, "pct": 9.4},
      {"range": "5+°F", "count": 8, "pct": 9.4}
    ],
    "verification_pairs": 85,
    "unique_days": 30
  },
  "metadata": {
    "generated_at": "2026-03-01T12:00:00Z",
    "days_analyzed": 90,
    "station_id": "KLAX",
    "query_time_ms": 4
  }
}