condition	mean	min	max
4 h after light	7.26096	7.137860000000001	7.38545
8 h after light	7.4301900000000005	7.23533	7.54011
12 h after light	7.559436666666667	7.32454	7.71395
4 h after dark	7.145413333333333	6.981330000000001	7.368869999999999
8 h after dark	7.230223333333333	7.174589999999999	7.301839999999999
12 h after dark	7.220753333333334	6.92276	7.4633199999999995