{
  "experiment": "native-power-query-missing-source",
  "prepared_execution": true,
  "started_utc": "2026-11-15T06:34:39.5599579Z",
  "excel_version": "16.0",
  "excel_build": 20527,
  "before_rows": 480,
  "before_total": 686500,
  "refresh_all_error": null,
  "refresh_all_seconds": 1.4707945999999998,
  "after_refresh_all_rows": 480,
  "after_refresh_all_total": 686500,
  "direct_refresh_error": "[Expression.Error] We couldn't find an Excel table named 'RawExport'.",
  "direct_refresh_return": null,
  "direct_refresh_seconds": 0.0611995,
  "final_rows": 480,
  "final_total": 686500,
  "calculation_state": 0,
  "query_refreshing": false,
  "native_seconds": 4.2871421,
  "api_ms": 4684,
  "controller_seconds": 4.763797832999899,
  "cost": {
    "per_task_usd": null,
    "reason": "Existing isolated research pilot; billing store has a zero acceptance rate, not an attributable operating-cost measurement. No new VM, license or paid tool purchased."
  }
}