Sources: health-report-2026-08-08-to-2026-08-09.json (Apple Watch sleep stages, exported 08:52 on 08-09) + OSCAR_Greg_by_Day_2026-08-08.csv (ResMed AirSense/AirFlow 11 via OSCAR). Session start (23:39 on 08-08) falls on the same calendar date as the CPAP Period, so the match is direct — no midnight-boundary ambiguity tonight. CPAP usage (6.83 h) lines up closely with Apple Watch time-in-bed (6.67 h), confirming the match.
| Metric | Value |
|---|---|
| Bedtime (session start) | 23:39 on 08-08 |
| Time in bed | 6.67 h (400.4 min) |
| Total sleep duration | 6.41 h (384.9 min) |
| Sleep efficiency (TST/TIB) | 96.1% — 27th of 52 matched nights (essentially the dataset median of 96.1%) |
| Awake time | 15.6 min — below 7-day (13.3)†... within typical range; below 30-day (18.4) average |
| Core sleep | 3.67 h (220.3 min) — 57.2% |
| Deep sleep | 1.04 h (62.2 min) — 16.2% — above 7-day (14.2%) and near 30-day (15.0%) averages |
| REM sleep | 1.71 h (102.4 min) — 26.6% — 9th-highest of 52 nights; above 7-day (25.1%) and 30-day (24.5%) averages |
| CPAP usage | 6.83 h — above 7-day avg (6.58 h), close to 30-day avg (6.73 h) |
| AHI | 2.34 — above 7-day (2.12) and 30-day (2.00) averages |
| RDI | 2.34 |
| OA / H / CA / UA / RERA | 6 / 10 / 0 / 0 / 0 — H count 3rd-highest of 52 matched nights |
| Pressure avg | 7.63 cmH₂O — above 7-day (7.50), below 30-day (7.81) averages |
| Pressure 90th %ile | 9.9 cmH₂O |
| Leak avg | 0.87 L/min — below 7-day (0.91), above 30-day (0.68) averages; 18th-highest of 52 matched nights |
| Leak 90th %ile | 3.6 L/min |
| Compliance flag | 1 (compliant) |
† Awake time note: tonight's 15.6 min is above the current 7-day average of 13.3 min but comfortably below the 30-day average of 18.4 min — a mixed comparison, called out explicitly rather than flagged as good or bad on its own.
| Date | AHI | OA | H | CA | RERA | Leak avg | Deep % | Awake (min) | Efficiency |
|---|---|---|---|---|---|---|---|---|---|
| 08-01 | 0.58 | 2 | 2 | 1 | 0 | 0.40 | 5.8% | 66.7 | 86.8% |
| 08-02 | 1.16 | 3 | 3 | 1 | 4 | 0.72 | 14.8% | 4.5 | 98.7% |
| 08-03 | 2.24 | 5 | 8 | 3 | 2 | 0.70 | 12.1% | 10.5 | 97.5% |
| 08-04 | 3.07 | 14 | 5 | 2 | 1 | 0.43 | 8.5% | 35.6 | 91.6% |
| 08-05 | 1.49 | 7 | 2 | 1 | 0 | 1.90 | 11.3% | 10.5 | 97.3% |
| 08-06 | 2.83 | 11 | 4 | 2 | 1 | 0.56 | 15.9% | 9.5 | 97.3% |
| 08-07 | 1.69 | 8 | 2 | 1 | 1 | 1.20 | 20.5% | 6.5 | 98.3% |
| 08-08 | 2.34 | 6 | 10 | 0 | 0 | 0.87 | 16.2% | 15.6 | 96.1% |
Split at leak ≤ 0.30 vs > 0.30 L/min (08-08's leak of 0.87 falls into the higher-leak bucket):
the user r (leak avg vs. deep %): −0.24 (n=52). the user r (leak avg vs. awake min): −0.13. the user r (AHI vs. awake min): −0.09. the user r (AHI vs. deep %): −0.03.
Interpretation: Tonight sits in the higher-leak bucket, but its deep% (16.2%) exactly matches the low-leak bucket's mean and beats the high-leak bucket's mean by 1.3 points; its awake time (15.6 min) lands between the two bucket averages, closer to the low-leak side. Consistent with prior reports, leak's relationship with deep% remains only weakly negative (r = −0.24) and neither leak nor AHI shows a meaningful linear relationship with awake time (r = −0.13 and −0.09 respectively) across the 52-night dataset.
| Metric | Tonight (08-08) | 7-day avg (08-02–08-08) | 30-day avg (through 08-08) |
|---|---|---|---|
| AHI | 2.34 | 2.12 | 2.00 |
| Leak avg (L/min) | 0.87 | 0.91 | 0.68 |
| Pressure avg (cmH₂O) | 7.63 | 7.50 | 7.81 |
| Usage hours | 6.83 | 6.58 | 6.73 |
| Deep sleep % | 16.2% | 14.2% | 15.0% |
| REM sleep % | 26.6% | 25.1% | 24.5% |
| Awake time (min) | 15.6 | 13.3 | 18.4 |
AHI is the metric to watch tonight — above both trailing averages, though not a sharp outlier in the full 52-night context. Leak actually eased slightly versus the current hot week (0.91) even as it stays above the 30-day baseline. Deep and REM sleep both remain favorable versus trailing averages.
| Week | AHI avg | Leak avg | n |
|---|---|---|---|
| 06-17 to 06-23 | 1.24 | 0.24 | 6 |
| 06-24 to 06-30 | 3.74 | 1.99 | 7 |
| 07-01 to 07-07 | 2.66 | 1.22 | 7 |
| 07-08 to 07-14 | 2.78 | 0.52 | 7 |
| 07-15 to 07-21 | 1.82 | 0.43 | 7 |
| 07-22 to 07-28 | 1.68 | 0.87 | 7 |
| 07-29 to 08-04 | 1.74 | 0.70 | 7 |
| 08-05 to 08-11 (partial, 4 of 7) | 2.09 | 1.13 | 4 |
Four nights into the new week, leak (1.13) remains well above the prior week (0.70) — the pattern first flagged on 08-06 is now confirmed across four consecutive nights, even as the week's AHI average (2.09) stays close to the 30-day baseline (2.00).
Tonight's standout is the hypopnea count, not AHI or leak. H=10 is the highest since the dataset's worst stretch in late June and roughly 3x tonight's own 30-day baseline, even though total AHI (2.34) stayed unremarkable because obstructive apneas were low. That compositional shift — light on OA, heavy on H — is worth a second look if it repeats in the next few nights; a recurring pattern could point to something mechanical (mask seal, sleep position, or pressure response) rather than random night-to-night noise. Leak, meanwhile, is the more familiar story: still elevated for a 4th straight night relative to the 30-day baseline, but tonight's reading (0.87) was actually the calmest of the four, and — as in the 08-07 report — elevated leak still isn't translating into worse sleep architecture (deep and REM sleep both beat their trailing averages tonight). Net picture: one metric worth flagging as new (hypopneas), one continuing to simmer without escalating (leak), and sleep quality itself still holding up well.