Table 2.

mean values and standard deviations (in parenthesis) of demographic data, and mean scores and 95% confidence intervals [C.I., in square brackets] obtained through bootstrapping of subjective measures (n = 17).

Age	20.25 (1.48)
Chronotype (rMEQ)	9.21 (1.65)
Midsleep time (hh:mm)	5:50 h (1:17)
	Blue-enriched white light	Dim light
Sleep hours (before experimental sessions)	5.68 (1.06)	5.27 (0.97)
Sleep onset (before experimental sessions)	1:36 h (1:27)	1:32 h (1:13)
Wake time (before experimental sessions)	6:50 h (0:29)	6:52 h (0:35)
Subjective sleepiness (KSS)
Pre	4.69 [3.94 – 5.5]	5.63 [4.69 – 6.44]
Post	6.13 [5.31 – 6.81]	6.69 [6 – 7.38]
Subjective mood state (1 = extremely bad; 9 = extremely good)
Pre	6.94 [6.31 – 7.5]	6.75 [5.88 – 7.31]
Post	6.87 [6.38 – 7.38]	6.63 [5.88 – 7.19]