condition	mean	min	max
4 h after light	6.913146666666666	6.762569999999999	7.09845
8 h after light	8.65251	8.503680000000001	8.79156
12 h after light	8.16934	8.023430000000001	8.25314
4 h after dark	8.006029999999999	7.78757	8.19727
8 h after dark	7.698573333333333	7.34748	7.90464
12 h after dark	6.540256666666667	6.35623	6.63227