Figure 1
Sleep quality, sleep duration, and aMT6s excretion rate. Mean (±s.e.m.) subjective sleep quality (top panel), sleep duration (middle panel), and aMT6s excretion rate (bottom panel) as a function of time of sleep onset. Data are double-plotted on the x-axis.
Table 1
Sleep quality, sleep duration, and aMT6s excretion rate (Mean ± s.e.m.) as a function of time of sleep onset
| Time-of-Day | Sleep Quality | Sleep Duration | aMT6s Excretion Rate |
| (2-hour bins) | (self-rated) | (hours) | (nmol/hour) |
| 0000–0200 | 3.70 (0.04) | 7.13 (0.06) | 5.57 (0.22) |
| 0200–0400 | 3.48 (0.06) | 6.22 (0.09) | 5.51 (0.35) |
| 0400–0600 | 3.43 (0.09) | 5.69 (0.14) | 5.33 (0.49) |
| 0600–0800 | 3.08 (0.14) | 5.19 (0.19) | 3.15 (0.45) |
| 0800–1000 | 3.47 (0.15) | 4.84 (0.26) | 2.31 (0.51) |
| 1000–1200 | 2.86 (0.21) | 5.24 (0.33) | 3.60 (1.01) |
| 1200–1400 | 3.29 (0.23) | 4.42 (0.31) | 1.95 (0.46) |
| 1400–1600 | 3.10 (0.18) | 4.77 (0.45) | 2.77 (1.29) |
| 1600–1800 | 3.37 (0.19) | 5.87 (0.51) | 4.06 (1.30) |
| 1800–2000 | 3.38 (0.11) | 6.91 (0.22) | 3.64 (0.50) |
| 2000–2200 | 3.53 (0.05) | 7.64 (0.11) | 4.71 (0.27) |
| 2200–0000 | 3.56 (0.03) | 7.54 (0.05) | 5.48 (0.15) |