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{
  "properties": {
    "data": {
      "additionalProperties": false,
      "properties": {
        "free_summary": {
          "description": "The free rollup this table audits",
          "type": "string"
        },
        "methodology": {
          "type": "string"
        },
        "rows": {
          "items": {
            "additionalProperties": false,
            "properties": {
              "bias_ours": {
                "description": "Mean signed error (forecast − actual), °C — the direction of the miss",
                "type": "number"
              },
              "date": {
                "description": "UTC day the forecasts were valid for",
                "type": "string"
              },
              "lead_hours": {
                "type": "number"
              },
              "mae_nws": {
                "anyOf": [
                  {
                    "type": "number"
                  },
                  {
                    "type": "null"
                  }
                ],
                "description": "Raw-NWS baseline MAE on the same rows; null outside the blend segment"
              },
              "mae_ours": {
                "description": "Mean absolute error of our served forecast, °C",
                "type": "number"
              },
              "model_version": {
                "type": "string"
              },
              "n": {
                "type": "number"
              },
              "n_nws": {
                "type": "number"
              },
              "region": {
                "type": "string"
              },
              "segment": {
                "description": "What produced the forecast: 'nws-blend' (proprietary nowcast at covered stations) or 'nws-gridpoint' (NWS passthrough)",
                "type": "string"
              },
              "station": {
                "description": "ICAO observation station that scored the rows ('unmatched' where none)",
                "type": "string"
              },
              "variable": {
                "type": "string"
              }
            },
            "required": [
              "date",
              "station",
              "region",
              "variable",
              "lead_hours",
              "segment",
              "model_version",
              "mae_ours",
              "bias_ours",
              "mae_nws",
              "n",
              "n_nws"
            ],
            "type": "object"
          },
          "type": "array"
        },
        "window_days": {
          "type": "number"
        }
      },
      "required": [
        "rows",
        "window_days",
        "methodology",
        "free_summary"
      ],
      "type": "object"
    },
    "meta": {
      "$ref": "#/components/schemas/Meta"
    }
  },
  "required": [
    "data",
    "meta"
  ],
  "type": "object"
}