{
  "schema_version": 3,
  "nodes": [
    "GUNMTN_NODE"
  ],
  "start": "2025-10-01",
  "end": "2025-11-30",
  "records": 1465,
  "expected_records": 1465,
  "records_per_node": 1465,
  "missing_days": {
    "GUNMTN_NODE": []
  },
  "sha256": "093580d69d9c75f88baa531d214b303ea679d1f934e6805223da36b8a53fa303",
  "settlement_points": {
    "GUNMTN_NODE": {
      "hours": 1465,
      "mean": 58.38,
      "median": 47.34,
      "p95": 135.56,
      "min": -9.89,
      "max": 213.31,
      "negative_hours": 20,
      "hours_above_100": 244,
      "peak_hours": 688,
      "peak_mean": 52.74,
      "offpeak_hours": 777,
      "offpeak_mean": 63.38,
      "peak_premium": -10.64,
      "tb2_avg": 100.82,
      "tb4_avg": 92.0,
      "monthly": [
        {
          "month": "2025-10",
          "hours": 744,
          "mean": 66.88,
          "p95": 149.18,
          "negative_hours": 2,
          "hours_above_100": 171,
          "tb2": 114.97,
          "tb4": 105.96
        },
        {
          "month": "2025-11",
          "hours": 721,
          "mean": 49.62,
          "p95": 116.46,
          "negative_hours": 18,
          "hours_above_100": 73,
          "tb2": 86.21,
          "tb4": 77.58
        }
      ]
    }
  },
  "basis": [],
  "definitions": {
    "peak": "hour-ending 7-22 Monday-Friday (holidays treated as weekdays); off-peak is every other hour",
    "tb2": "per delivery day, mean of the 2 highest hourly prices minus mean of the 2 lowest; averaged with equal weight per day",
    "tb4": "per delivery day, mean of the 4 highest hourly prices minus mean of the 4 lowest; averaged with equal weight per day",
    "p95": "95th percentile with linear interpolation",
    "spike_threshold_usd_per_mwh": 100.0,
    "basis": "mean over matched hourly intervals of price(a) minus price(b)",
    "missing_days": "delivery days the source returned no rows for; excluded from every metric and from hourly.csv"
  },
  "source": "ERCOT NP4-190-CD as retrieved; corrections may occur"
}