{
  "series_id": "JTS110099000000000_REALIZED_TIGHTNESS_C3MO_AVG",
  "source": "derived",
  "shortName": "Realized Tightness (Mining and Logging) (Centered 3Mo Avg)",
  "updateFrequency": "monthly",
  "unit": "ratio",
  "derivation": {
    "type": "centered_ma",
    "source": "JTS110099000000000_REALIZED_TIGHTNESS",
    "window": 3,
    "description": "3-month centered moving average. Last point raw."
  }
}