condition	mean	min	max
4 h after light	7.76126	7.6585	7.83245
8 h after light	7.721856666666667	7.4884	7.92398
12 h after light	7.7232433333333335	7.6242	7.887160000000001
4 h after dark	7.725703333333334	7.23693	8.050510000000001
8 h after dark	7.70094	7.546810000000001	7.844589999999999
12 h after dark	7.37371	7.324730000000001	7.46586