{
  "sample_label": "Signal records logged October 26\u2013November 1, 2026 (UTC)",
  "period_start": "2026-10-26T00:00:00+00:00",
  "period_end_exclusive": "2026-11-02T00:00:00+00:00",
  "collected_at": "2026-11-02T19:39:46.899084+00:00",
  "observed_market_windows": 664,
  "windows_marked_alerted": 535,
  "observed_windows_not_marked_alerted": 129,
  "duplicate_rows": 0,
  "flagged_record_timing": {
    "count": 535,
    "median_seconds_before_close": 169.9,
    "minimum_seconds_before_close": 161.8,
    "maximum_seconds_before_close": 174.6,
    "records_created_at_or_after_close": 0
  },
  "observed_windows_by_record_date_utc": {
    "2026-10-26": 96,
    "2026-10-27": 96,
    "2026-10-28": 96,
    "2026-10-29": 88,
    "2026-10-30": 96,
    "2026-10-31": 96,
    "2026-11-01": 96
  },
  "eligible_exchange_windows": null,
  "missed_eligible_alerts": null,
  "telegram_accepted_messages": null,
  "device_delivery_or_read_time": null,
  "method": "Unique ticker and UTC close per signal record logged in the stated UTC period. A repeated Eastern hour is disambiguated by the recorded UTC timestamp and loop remaining time. For each window marked alerted, lead time is the ticker close minus the earliest flagged record creation timestamp. This timestamp precedes Telegram fan-out.",
  "limitations": [
    "The alerted flag means the send routine returned. It does not count Telegram API successes, confirm that every intended recipient received an alert, or measure device receipt/read time.",
    "Subscriber filters can suppress individual alerts. A marked window is not a per-subscriber promise.",
    "The dataset omits some windows, including no-market or invalid-price skips. It is not a census of all eligible exchange windows. Missed eligible alerts and coverage percentage are unknown.",
    "Observed windows not marked alerted can include model/filter exclusions; they are not all failures.",
    "This dated service sample is separate from the priced, graded performance record and is not a future guarantee."
  ],
  "source_sha256": "1f80c42da01f708db21bb68c83b1e6ea83799f65eb3915a259752fc7ec0295d2",
  "notifier_sha256": "b94e0e3dc5483244c398f78c238def5d013fc57ae2249a7751ed4e7ee91b4381",
  "undated_rows_in_full_dataset": 0
}