{
  "label": "SYNTHETIC DEMO DATA \u2014 no real health records",
  "timezone": "Europe/Amsterdam",
  "period_start": "2026-09-21",
  "period_end": "2026-10-20",
  "units": {
    "hrv_sdnn_ms": "ms",
    "sleep_minutes": "minutes",
    "resting_hr_bpm": "bpm"
  },
  "missing_value_rule": "null is missing, never zero. Keep dates and gaps. Do not combine with personal Health records.",
  "sleep_method": "Daily asleep totals include all complete sessions by local wake date. For Oct 3 the two supplied asleep durations total 451.75 minutes; elapsed session time can include awake time.",
  "daily": [
    {
      "date": "2026-09-21",
      "hrv_sdnn_ms": 60.123456789,
      "sleep_minutes": 410.123456789,
      "resting_hr_bpm": 62.812345678
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    {
      "date": "2026-09-22",
      "hrv_sdnn_ms": 60.854456789,
      "sleep_minutes": 419.373456789,
      "resting_hr_bpm": 62.392345678
    },
    {
      "date": "2026-09-23",
      "hrv_sdnn_ms": 61.585456789,
      "sleep_minutes": 428.623456789,
      "resting_hr_bpm": 61.972345678
    },
    {
      "date": "2026-09-24",
      "hrv_sdnn_ms": 62.316456789,
      "sleep_minutes": 437.873456789,
      "resting_hr_bpm": 61.552345678
    },
    {
      "date": "2026-09-25",
      "hrv_sdnn_ms": 63.047456789,
      "sleep_minutes": 447.123456789,
      "resting_hr_bpm": 61.132345678
    },
    {
      "date": "2026-09-26",
      "hrv_sdnn_ms": 63.778456789,
      "sleep_minutes": 456.373456789,
      "resting_hr_bpm": 60.712345678
    },
    {
      "date": "2026-09-27",
      "hrv_sdnn_ms": null,
      "sleep_minutes": 465.623456789,
      "resting_hr_bpm": 60.292345678
    },
    {
      "date": "2026-09-28",
      "hrv_sdnn_ms": 65.240456789,
      "sleep_minutes": 410.123456789,
      "resting_hr_bpm": 59.872345678
    },
    {
      "date": "2026-09-29",
      "hrv_sdnn_ms": 65.971456789,
      "sleep_minutes": 419.373456789,
      "resting_hr_bpm": 59.452345678
    },
    {
      "date": "2026-09-30",
      "hrv_sdnn_ms": 66.702456789,
      "sleep_minutes": null,
      "resting_hr_bpm": 62.812345678
    },
    {
      "date": "2026-10-01",
      "hrv_sdnn_ms": 67.433456789,
      "sleep_minutes": 437.873456789,
      "resting_hr_bpm": 62.392345678
    },
    {
      "date": "2026-10-02",
      "hrv_sdnn_ms": 68.164456789,
      "sleep_minutes": 447.123456789,
      "resting_hr_bpm": 61.972345678
    },
    {
      "date": "2026-10-03",
      "hrv_sdnn_ms": 68.895456789,
      "sleep_minutes": 451.75,
      "resting_hr_bpm": 61.552345678,
      "sleep_sessions": [
        {
          "local_start": "2026-10-02T23:30:00",
          "local_end": "2026-10-03T06:45:15",
          "asleep_milliseconds": 25215000
        },
        {
          "local_start": "2026-10-03T14:00:00",
          "local_end": "2026-10-03T14:31:30",
          "asleep_milliseconds": 1890000
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    {
      "date": "2026-10-04",
      "hrv_sdnn_ms": 69.626456789,
      "sleep_minutes": 465.623456789,
      "resting_hr_bpm": 61.132345678
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    {
      "date": "2026-10-05",
      "hrv_sdnn_ms": 70.357456789,
      "sleep_minutes": 410.123456789,
      "resting_hr_bpm": 60.712345678
    },
    {
      "date": "2026-10-06",
      "hrv_sdnn_ms": 71.088456789,
      "sleep_minutes": 419.373456789,
      "resting_hr_bpm": 60.292345678
    },
    {
      "date": "2026-10-07",
      "hrv_sdnn_ms": 71.819456789,
      "sleep_minutes": 428.623456789,
      "resting_hr_bpm": 59.872345678
    },
    {
      "date": "2026-10-08",
      "hrv_sdnn_ms": 72.550456789,
      "sleep_minutes": 437.873456789,
      "resting_hr_bpm": 59.452345678
    },
    {
      "date": "2026-10-09",
      "hrv_sdnn_ms": 73.281456789,
      "sleep_minutes": 447.123456789,
      "resting_hr_bpm": 62.812345678
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    {
      "date": "2026-10-10",
      "hrv_sdnn_ms": 74.012456789,
      "sleep_minutes": 456.373456789,
      "resting_hr_bpm": 62.392345678
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    {
      "date": "2026-10-11",
      "hrv_sdnn_ms": 74.743456789,
      "sleep_minutes": 465.623456789,
      "resting_hr_bpm": 61.972345678
    },
    {
      "date": "2026-10-12",
      "hrv_sdnn_ms": 75.474456789,
      "sleep_minutes": 410.123456789,
      "resting_hr_bpm": 61.552345678
    },
    {
      "date": "2026-10-13",
      "hrv_sdnn_ms": 76.205456789,
      "sleep_minutes": 419.373456789,
      "resting_hr_bpm": 61.132345678
    },
    {
      "date": "2026-10-14",
      "hrv_sdnn_ms": 76.936456789,
      "sleep_minutes": 428.623456789,
      "resting_hr_bpm": 60.712345678
    },
    {
      "date": "2026-10-15",
      "hrv_sdnn_ms": 77.667456789,
      "sleep_minutes": 437.873456789,
      "resting_hr_bpm": null
    },
    {
      "date": "2026-10-16",
      "hrv_sdnn_ms": 78.398456789,
      "sleep_minutes": null,
      "resting_hr_bpm": 59.872345678
    },
    {
      "date": "2026-10-17",
      "hrv_sdnn_ms": 79.129456789,
      "sleep_minutes": 456.373456789,
      "resting_hr_bpm": 59.452345678
    },
    {
      "date": "2026-10-18",
      "hrv_sdnn_ms": null,
      "sleep_minutes": 465.623456789,
      "resting_hr_bpm": 62.812345678
    },
    {
      "date": "2026-10-19",
      "hrv_sdnn_ms": 80.591456789,
      "sleep_minutes": 410.123456789,
      "resting_hr_bpm": 62.392345678
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    {
      "date": "2026-10-20",
      "hrv_sdnn_ms": 81.322456789,
      "sleep_minutes": 419.373456789,
      "resting_hr_bpm": 61.972345678
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}