{
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          "duration_seconds": 874,
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        {
          "started_at": "2026-08-14T01:44:06.022557Z",
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        {
          "started_at": "2026-08-14T01:11:37.817409Z",
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        {
          "started_at": "2026-08-14T00:51:35.936483Z",
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          "duration_seconds": 1202,
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        {
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          "duration_seconds": 220,
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        {
          "started_at": "2026-08-13T19:01:49.879370Z",
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          "duration_seconds": 1072,
          "reason": "no poll recorded",
          "cycles_missed": 15
        },
        {
          "started_at": "2026-08-13T05:52:36.489291Z",
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          "duration_seconds": 43974,
          "reason": "no poll recorded",
          "cycles_missed": 659
        },
        {
          "started_at": "2026-08-13T04:39:21.168536Z",
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          "duration_seconds": 5,
          "reason": "poll failed",
          "cycles_missed": 0
        },
        {
          "started_at": "2026-08-13T04:38:07.260841Z",
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          "duration_seconds": 5,
          "reason": "poll failed",
          "cycles_missed": 0
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        {
          "started_at": "2026-08-13T04:37:00.969902Z",
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          "duration_seconds": 4,
          "reason": "poll failed",
          "cycles_missed": 0
        },
        {
          "started_at": "2026-08-13T04:27:13.377750Z",
          "ended_at": "2026-08-13T04:27:17.844356Z",
          "duration_seconds": 4,
          "reason": "poll failed (3 of 3 batches)",
          "cycles_missed": 0
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      "elapsed_seconds": 156096,
      "elapsed_source": "published_at minus first_cycle_at",
      "publisher_days_running": 1.8067728590277776,
      "publisher_clock_drift_seconds": -10,
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      "gap_seconds_raw_sum": 82645,
      "gap_intervals_after_merge": 11,
      "gap_overlaps_merged": 0,
      "gap_rows_unusable": 0,
      "ingesting_seconds": 73449,
      "coverage_fraction": 0.47054104212669584,
      "ledger_usable": true,
      "largest_gap": {
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        "duration_seconds": 43974,
        "reason": "no poll recorded",
        "cycles_missed": 659
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      "cycles_accounted": 2343,
      "cycles_expected_at_measured_cadence": 2343,
      "reconciliation_delta": 0,
      "reconciliation_tolerance_cycles": 47,
      "method": "elapsed = published_at minus first_cycle_at, falling back to days_running x 86400 if either timestamp is unreadable. ingesting = elapsed minus the recorded gaps, with overlapping intervals merged before they are added up. expected cycles = elapsed / cadence_seconds, and cadence_seconds is a mean, so that count is good to a few cycles and not to one. every input is a column the publisher wrote."
    }
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        "failing_axis": "quality"
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        "gate": "fail",
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}