condition	mean	min	max
4 h after light	8.16295	8.08953	8.24807
8 h after light	8.037996666666666	7.91563	8.19917
12 h after light	8.119153333333333	7.80682	8.3065
4 h after dark	7.564383333333334	7.46125	7.67835
8 h after dark	7.465926666666666	7.376869999999999	7.637569999999999
12 h after dark	7.184200000000001	6.861960000000001	7.47483