Table 1.

Average values for daily life habits

	Mean value (range)	SD
Sleep onset time (clock time)	21:24 (19:03–24:08)	49.2 min
Night sleep duration (h)	9.9 (7.8–14.0)	0.8
Waking time (clock time)	7:19 (5:05–10:29)	49.8 min
Nap duration (h)	1.7 (0–3.3)	0.6
Band for sleep onset time (h)	1.7 (0–6.5)	1.2
Band for waking time (h)	1.5 (0.2–7.0)	0.9