{
  "version": 1,
  "instrument": "NQ",
  "contract": "NQZ6",
  "date": "2026-09-25",
  "timeZone": "America/New_York",
  "startTimestamp": 1790344800033,
  "durationMs": 899965,
  "sourceFile": "NQZ6_2026-09-25_1000-1015.csv",
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  "rawRows": 772245,
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  "trades": 33161,
  "bookSnapshots": 12416,
  "depth": "20 levels per side as recorded",
  "transform": "All trades and full order book snapshots retained; partial BBO updates omitted.",
  "jsonBytes": 6473928,
  "zipBytes": 473524
}