🟢 Return to Central Time (−05:00) — travel appears to have ended. Sleep timestamp 2026-10-17T00:02:36-05:00 (CDT). The 2-night Eastern Time trip (10-14, 10-15) is concluded. A 71-minute afternoon nap at 14:46 CDT on 10-16 precedes tonight's main sleep — a classic post-travel recovery pattern. The nap is assigned to 10-16 under the before-18:00 rule but not included in the night's TIB/TSD. With the user back on home ground, the sleep environment variables (bed, pillow, mask setup) have returned to baseline, which likely explains tonight's leak-floor reversion and clean CPAP profile.
🟢 REM% 36.49 is the HIGHEST REM night in the 26-night window (rank 1/26 desc; z = +2.50 vs 30d; +48.4% vs 30d avg 24.59). REM minutes 121.94 matches the 10-14 record (121.93 min) — the two highest REM-minute readings in the window are now 2 of the last 3 nights. The 4-night REM% path (10-13 → 10-16): 24.02 → 33.61 → 15.82 → 36.49 — tonight's +20.67pp bounce from yesterday is the sharpest positive REM delta in the dataset. This is textbook REM rebound: last night's REM% 15.82 (window floor) is followed by tonight's 36.49 (window ceiling). The 7d trailing REM% mean after tonight is 24.42 — essentially pulled back to the 30d baseline (24.59) by the two end-of-week extremes offsetting. This confirms the 10-15 report's prediction: 'If 10-16 is a normal-length night, expect a REM rebound.' The compensatory REM-recovery mechanism engaged exactly as expected.
🟢 Leak metrics FULLY REVERT to window floor — Leak_90 0.00 is tied for 1st-lowest with 10-13 (rank 1/26 asc; z = -1.28; -100% vs 30d), Leak_Avg 0.31 is window FLOOR (rank 1/26 asc; z = -1.35; -75.7% vs 30d). The 4-night Leak_Avg path (10-13 → 10-16): 0.32 → 1.00 → 1.81 → 0.31 — tonight matches 10-13's window-floor reading almost exactly. Leak_Max 20.4 (rank 8/26 asc; -13.4% vs 30d) is in the bottom-third. The 'episodic leak' interpretation from recent reports is reinforced: 10-15's modest 1.81 Leak_Avg was NOT a mask-fit degradation signal — it was a mid-week bump bracketed by two floor readings. 2-of-4 nights at the window floor for Leak_Avg is strong evidence that the mask seal is working excellently when it works; the mid-week readings reflect position / cushion-seat dynamics rather than hardware wear.
🟢 FL_P95 0.09 reverts — rank 14/26 asc (z = -0.47; -20.3% vs 7d, -9.4% vs 30d). The 4-night FL_P95 streak (10-13 → 10-16): 0.08 → 0.12 → 0.13 → 0.09 — the 3-night elevated plateau flagged yesterday breaks cleanly tonight. Min_Above_010 13.5 min is rank 5/26 asc (z = -0.80; -32.8% vs 7d, -23.9% vs 30d) — well below 30d baseline. Min_Above_020 2.5 min is also below 30d (-43.2%). Yesterday's 'FL as the one sustained anomaly' concern is resolved: with tonight's reading at 0.09, the 3-night elevated plateau was not the start of a sustained trend. The 4-night Min_Above_010 mean is 17.4 min, essentially matching 30d 17.75.
🟢 Respiratory metrics continue clean baseline — AHI 1.86, OA 5, H 4, CA 2, RERA 0. AHI rank 10/26 in high direction (z = -0.05 vs 30d — essentially baseline). The 3-night AHI path (10-14 → 10-16): 2.86 → 1.42 → 1.86 — the 10-14 breakout now reads as a one-night event, not the start of a new regime. OA 5 is rank 19/26 asc (4th-lowest in window), -20.5% vs 7d, -36.7% vs 30d. H 4 (rank 7/26 in high direction) is +40.0% vs 7d avg 2.86 — a modest hypopnea uptick, worth noting but still well below the 30d max in the window. CA 2 (rank 4/26 in high direction) is the 2nd-elevated CA count in the recent window after 10-14's 3 — the 7d trailing CA mean is now 1.0 vs the 30d mean 0.47. The CA signal has persisted at low-but-nonzero levels for 3 of the last 7 nights.
🟢 Deep% 17.57 — rank 5/26 in high direction (z = +1.05; +29.7% vs 7d, +27.4% vs 30d). Deep minutes 58.71 is the highest Deep-minutes reading since 2026-10-07's 69.77. 3-night Deep% path (10-14 → 10-16): 15.49 → 15.05 → 17.57 — three consecutive readings at or above the 7d trailing baseline. The 3-night rolling Deep% mean (16.04) is +22.5% above the 30d mean 13.08. Combined with tonight's REM record, the sleep architecture is strongly rich-stage-dominant: Deep + REM = 54.05%, versus the 30d baseline of ~37%.
🟡 Awake 13.55 min — rank 5/26 in high direction (z = +0.67 vs 30d; +60.2% vs 7d, +42.1% vs 30d); sleep efficiency 96.10% is rank 5/26 asc (5th-lowest in window). This is the SECOND elevated-awake night in 4 (10-13 was 17.06 min — the window's 3rd-highest). Pattern (10-13 → 10-16): 17.06 → 5.02 → 1.51 → 13.55 — alternating elevation with floor readings in between. Unlike 10-13, tonight's elevated awake sits alongside clean CPAP metrics (floor leaks, moderate FL, mid-range pressure, baseline AHI) — the CPAP data gives no respiratory explanation for the awake elevation. Candidate hypotheses (same as 10-13): external environmental disturbance, bathroom trip, pre-sleep thoughts. Across the 107-night confident matched set, FL_P95 vs awake_min correlation remains essentially zero, so FL is not predictive of awake time at the population level — tonight's awake-time elevation is not CPAP-explainable.
🟡 TIB 347.74 min (5h 47.7m) — rank 5/26 asc (5th-shortest; z = -1.01; -4.9% vs 7d, -7.5% vs 30d). Third short-night in the last 5 (10-12 335.68, 10-13 349.24, 10-15 328.16, 10-16 347.74 — 10-14 was the one reprieve at 367.81). The 5-night TIB mean 345.73 min is well below both the 7d trailing (365.80) and 30d (376.10) baselines. Sleep onset 00:02:36 CDT (just past midnight) — the latest sleep start in the recent window, a +90-minute shift later than 10-15's 22:32. The variable bedtime (10-13 22:53, 10-14 23:49, 10-15 22:32, 10-16 00:02) continues the inconsistent-schedule pattern. Also noted: a 71-minute afternoon nap at 14:46 CDT today (not counted in the primary TIB). This nap may have influenced tonight's elevated REM% / Deep% by reducing homeostatic sleep pressure buildup — though with REM already in rebound mode from 10-15's floor, the two effects reinforce rather than cancel.
| Metric | Value |
|---|---|
| Sleep start | 2026-10-17T00:02:36-05:00 |
| Time in bed | 347.74 min (5h 47.7m) |
| Total sleep | 334.19 min (5h 34.2m) |
| Sleep efficiency | 96.10% |
| Awake time | 13.55 min |
| Core (N1+N2) sleep | 153.55 min / 45.95% |
| Deep (N3) sleep | 58.71 min / 17.57% |
| REM | 121.94 min / 36.49% |
| CPAP usage hours | 5.92 |
| Session count | 1 |
| AHI | 1.86 |
| RDI | 1.86 |
| Obstructive apneas (OA) | 5 |
| Hypopneas (H) | 4 |
| Central apneas (CA) | 2 |
| Unclassified apneas (UA) | 0 |
| RERA | 0 |
| Pressure_Avg | 7.57 |
| Pressure_Min | 4.00 |
| Pressure_Max | 12.24 |
| Pressure_90th | 9.98 |
| Leak_Avg | 0.31 |
| Leak_Max | 20.40 |
| Leak_90th | 0.00 |
| FL_Avg | 0.0150 |
| FL_P95 | 0.09 |
| FL_Max | 0.41 |
| Min_Above_005 (min) | 34.9 |
| Min_Above_010 (min) | 13.5 |
| Min_Above_020 (min) | 2.5 |
| Frac_NonZero (FL samples) | 26.92% |
| Metric | Tonight | 7d avg | 30d avg | Δ vs 7d | Δ vs 30d |
|---|---|---|---|---|---|
| AHI | 1.86 | 1.70 | 1.90 | +9.5% | -2.2% |
| RDI | 1.86 | 1.81 | 2.06 | +2.6% | -9.9% |
| OA count | 5.00 | 6.29 | 7.90 | -20.5% | -36.7% |
| H count | 4.00 | 3.43 | 3.57 | +16.7% | +12.1% |
| CA count | 2.00 | 0.86 | 0.47 | +133.3% | +328.6% |
| RERA count | 0.00 | 0.71 | 1.03 | -100.0% | -100.0% |
| Pressure_Avg | 7.57 | 7.60 | 7.61 | -0.4% | -0.5% |
| Pressure_90 | 9.98 | 10.23 | 10.20 | -2.4% | -2.2% |
| Pressure_Max | 12.24 | 12.32 | 12.13 | -0.6% | +0.9% |
| Leak_Avg | 0.31 | 1.23 | 1.28 | -74.8% | -75.7% |
| Leak_Max | 20.40 | 23.49 | 23.56 | -13.1% | -13.4% |
| Leak_90th | 0.00 | 4.46 | 4.28 | -100.0% | -100.0% |
| Usage hours | 5.92 | 6.25 | 6.35 | -5.3% | -6.7% |
| FL_P95 | 0.090 | 0.113 | 0.099 | -20.3% | -9.4% |
| FL_Avg | 0.0150 | 0.0176 | 0.0163 | -14.9% | -8.2% |
| FL_Max | 0.410 | 0.466 | 0.485 | -12.0% | -15.5% |
| Min_Above_005 | 34.9 | 41.9 | 39.7 | -16.7% | -12.0% |
| Min_Above_010 | 13.5 | 20.1 | 17.8 | -32.8% | -23.9% |
| Min_Above_020 | 2.5 | 5.5 | 4.3 | -54.3% | -41.9% |
| Frac_NonZero | 0.269 | 0.258 | 0.256 | +4.5% | +5.1% |
| Deep % | 17.57 | 13.54 | 13.79 | +29.7% | +27.4% |
| REM % | 36.49 | 25.24 | 24.59 | +44.5% | +48.4% |
| Core % | 45.95 | 61.21 | 61.62 | -24.9% | -25.4% |
| Awake min | 13.55 | 8.46 | 9.53 | +60.2% | +42.1% |
| TIB min | 347.74 | 365.80 | 376.10 | -4.9% | -7.5% |
| Total sleep min | 334.19 | 357.34 | 366.57 | -6.5% | -8.8% |
| Sleep efficiency | 96.10 | 97.66 | 97.46 | -1.6% | -1.4% |
| Metric | Recent 7d | Prior 7d | Δ | Δ % |
|---|---|---|---|---|
| AHI | 1.699 | 2.020 | -0.321 | -15.9% |
| RDI | 1.813 | 2.406 | -0.593 | -24.6% |
| OA | 6.286 | 8.714 | -2.429 | -27.9% |
| H | 3.429 | 3.714 | -0.286 | -7.7% |
| CA | 0.857 | 0.286 | +0.571 | +200.0% |
| RERA | 0.714 | 2.429 | -1.714 | -70.6% |
| Pressure_Avg | 7.603 | 7.456 | +0.147 | +2.0% |
| Pressure_90 | 10.226 | 10.269 | -0.043 | -0.4% |
| Pressure_Max | 12.320 | 11.960 | +0.360 | +3.0% |
| Leak_Avg | 1.230 | 1.700 | -0.470 | -27.6% |
| Leak_90 | 4.457 | 5.143 | -0.686 | -13.3% |
| Leak_Max | 23.486 | 27.600 | -4.114 | -14.9% |
| Usage hours | 6.250 | 6.427 | -0.177 | -2.8% |
| Deep % (Apple) | 13.541 | 12.453 | +1.088 | +8.7% |
| REM % (Apple) | 25.245 | 24.786 | +0.459 | +1.9% |
| Awake min (Apple) | 8.458 | 7.097 | +1.362 | +19.2% |
| Sleep min (Apple) | 357.339 | 378.844 | -21.505 | -5.7% |
| TIB min (Apple) | 365.798 | 385.941 | -20.143 | -5.2% |
| Sleep efficiency | 97.655 | 98.144 | -0.489 | -0.5% |
| FL_P95 | 0.113 | 0.096 | +0.017 | +17.9% |
| FL_Avg | 0.018 | 0.016 | +0.001 | +9.1% |
| Min_Above_010 | 20.100 | 17.500 | +2.600 | +14.9% |
| Min_Above_020 | 5.471 | 5.371 | +0.100 | +1.9% |
| Date | AHI | OA | CA | RERA | PAvg | P90 | LAvg | LMax | L90 | FL_P95 | MinAbv010 | MinAbv020 | Deep% | REM% | Awake |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 2026-10-07 | 1.24 | 7 | 0 | 0 | 7.69 | 10.72 | 1.50 | 34.8 | 3.6 | 0.12 | 23.3 | 4.6 | 18.21 | 23.43 | 6.02 |
| 2026-10-08 | 0.85 | 6 | 0 | 1 | 6.89 | 9.20 | 1.58 | 30.0 | 3.6 | 0.09 | 17.4 | 3.9 | 9.40 | 24.30 | 9.03 |
| 2026-10-09 | 1.49 | 6 | 1 | 5 | 7.38 | 9.88 | 1.34 | 24.0 | 4.8 | 0.08 | 14.0 | 6.7 | 14.02 | 20.09 | 10.54 |
| 2026-10-10 | 1.26 | 5 | 0 | 1 | 7.38 | 10.60 | 1.10 | 18.0 | 4.8 | 0.14 | 32.0 | 9.8 | 10.27 | 18.96 | 4.01 |
| 2026-10-11 | 1.42 | 4 | 0 | 1 | 7.78 | 10.18 | 1.89 | 24.0 | 9.6 | 0.09 | 15.6 | 4.1 | 8.59 | 26.65 | 9.53 |
| 2026-10-12 | 1.41 | 5 | 0 | 0 | 8.20 | 10.74 | 2.18 | 40.8 | 8.4 | 0.14 | 26.7 | 5.9 | 11.04 | 21.17 | 8.53 |
| 2026-10-13 | 1.66 | 8 | 0 | 0 | 7.13 | 9.90 | 0.32 | 16.8 | 0.0 | 0.08 | 10.2 | 2.3 | 16.77 | 24.02 | 17.06 |
| 2026-10-14 | 2.86 | 12 | 3 | 1 | 8.18 | 10.66 | 1.00 | 19.2 | 3.6 | 0.12 | 21.9 | 4.3 | 15.49 | 33.61 | 5.02 |
| 2026-10-15 | 1.42 | 5 | 1 | 2 | 6.98 | 9.52 | 1.81 | 25.2 | 4.8 | 0.13 | 20.8 | 9.4 | 15.05 | 15.82 | 1.51 |
| 2026-10-16 | 1.86 | 5 | 2 | 0 | 7.57 | 9.98 | 0.31 | 20.4 | 0.0 | 0.09 | 13.5 | 2.5 | 17.57 | 36.49 | 13.55 |
Correlations computed across the full matched set after excluding pre-2026-06-23 low-confidence CPAP nights.
| Pair | the user r | Interpretation |
|---|---|---|
| AHI vs deep_pct | +0.080 | negligible |
| AHI vs awake_min | +0.056 | negligible |
| OA vs awake_min | +0.116 | weak positive |
| CA vs deep_pct | +0.085 | negligible |
| Leak_Avg vs deep_pct | -0.161 | weak negative |
| Leak_90 vs deep_pct | -0.152 | weak negative |
| Leak_Max vs awake_min | +0.015 | negligible |
| FL_P95 vs awake_min | -0.098 | negligible |
| Min_Above_010 vs deep_pct | -0.004 | negligible |
Bucket comparison (Leak_90 median split, median = 2.40): - Low-leak nights (n=46): mean deep% 14.97, awake 14.36 min - High-leak nights (n=61): mean deep% 14.10, awake 11.91 min - Δ (high – low): deep% -0.87 pp, awake -2.44 min
REM% 36.49 is the highest in the 26-night window and the second REM record in 3 nights (10-14 at 33.61). This pairs with 10-15's floor reading in a classic REM-rebound pattern. The 2-of-3 record-high REM nights are evidence of volatile REM homeostasis more than of durably improved sleep. The 7d REM% mean 24.42 is right at the 30d baseline — tonight's spike compensates for yesterday's deficit rather than resetting the baseline upward.
The afternoon nap (71 min at ~14:46 CDT, assigned to 10-16 under the before-18:00 rule) is NOT included in the primary TIB/TSD figures above. It may have reduced the night's homeostatic sleep pressure — but with a 71-min nap followed by a 347.74-min main sleep, the user's 24-hour total sleep is roughly 395 min (~6h 35m), which is more than the main night alone suggests. If this becomes a daily pattern, the main-night TIB will systematically understate 24h sleep adequacy.
3-of-last-5 short nights with variable bedtimes. Sleep onset in the last 5 nights has ranged from 22:32 to 00:49 — a 2h 17m variability window. Consistent sleep-wake timing improves REM/Deep cycling; the current pattern may be contributing to the REM volatility (10-14 spike, 10-15 collapse, 10-16 record). If 10-17 or 10-18 reads another short-with-late-onset night, the architectural volatility is likely to continue.
Leak-floor streak at 2-of-4 nights. 10-13 and 10-16 both tie the window-minimum Leak_Avg/Leak_90 readings. This is a measurement signature of excellent mask seal — a reassuring signal that the mask hardware is NOT nearing end-of-life. Mid-week leak upticks are now firmly interpretable as episodic (position / seat), not structural (cushion wear).
CA 2 tonight extends the recent CA-nonzero pattern. 3 of the last 7 nights have had CA ≥ 1 (10-09 CA 1, 10-14 CA 3, 10-15 CA 1, 10-16 CA 2). The 7d CA mean is now 1.0 vs the 30d mean 0.47 — a 2x uptick, though absolute counts are low. Not clinically concerning (centrals are a small fraction of total events), but worth tracking if the trend continues: a sustained CA ≥ 1 nightly for 10+ nights would warrant a conversation with the sleep provider.
Matched-night confident count is now 107 (vs 106 after the 10-15 report). Correlations are stable at this sample size.
Post-travel recovery context frames tonight's REM record. With 2 nights of Eastern Time disruption (10-14 and 10-15) now resolved and the body back on Central Time, tonight's REM-dominant architecture is almost certainly a sleep-debt recovery night. The late onset (00:02 CDT) combined with the afternoon nap suggests the user was processing travel fatigue through a mix of nap + late sleep + REM-weighted recovery. Expect 10-17 to show more normalized architecture now that the recovery night is done.
All flagged metrics remain within clinically safe ranges (AHI < 5, RDI < 5, leak at window floor, pressure mid-range). Tonight is 'rich sleep architecture + CPAP floor-level leak' — one of the clearest 'clean night' profiles of the recent window, slightly undercut by the modest awake-time elevation and the ongoing short-night pattern. The leak reversion to window floor on the first night back home is a strong signal that the mid-trip CPAP anomalies were travel-environment artifacts, not durable physiology or hardware changes.