condition	mean	min	max
4 h after light	7.278126666666667	6.928889999999999	7.45943
8 h after light	7.61961	7.3583300000000005	7.77952
12 h after light	7.51609	7.157210000000001	7.81363
4 h after dark	7.39874	7.057760000000001	7.71461
8 h after dark	7.2466333333333335	7.04915	7.377460000000001
12 h after dark	7.1850966666666665	6.7173	7.4291