. Author manuscript; available in PMC: 2014 Jan 1.

Published in final edited form as: Appl Ergon. 2012 Jun 12;44(1):109–111. doi: 10.1016/j.apergo.2012.05.007

Table 1.

Mean and standard deviation of PVT variables (msec) closer to or further from a phase angle of 6 hours.

	Before Bedtime		After Wake Time
	Closer to phase angle of 6 hours	Further from phase angle of 6 hours	Closer to phase angle of 6 hours	Further from phase angle of 6 hours
Mean reaction time^*	261.3 (32.8)	296.6 (70.1)	280.7 (31.8)	313.3 (75.8)
Median reaction time^*	250.5 (29.5)	268.2 (34.0)	261.8 (28.9)	290.9 (51.5)
Slowest 10% reaction time^†	392.2 (105.8)	546.6 (363.5)	439.9 (103.8)	541.4 (302.2)
Fastest 10% reaction time^*	201.5 (16.7)	209.4 (14.8)	209.1 (16.6)	219.5 (20.1)

p<0.05,

^†

p=0.051 Main effect of Condition (circadian phase)