condition	mean	min	max
4 h after light	7.4425333333333334	7.3078199999999995	7.699269999999999
8 h after light	7.4238100000000005	7.25525	7.55501
12 h after light	7.336553333333334	7.1429100000000005	7.59895
4 h after dark	7.443146666666667	7.263380000000001	7.682360000000001
8 h after dark	7.424766666666667	7.29632	7.525710000000001
12 h after dark	7.33129	7.31522	7.34364