condition	mean	min	max
4 h after light	8.495753333333335	8.463460000000001	8.537360000000001
8 h after light	7.616813333333333	7.393689999999999	7.7758
12 h after light	8.244603333333332	8.119069999999999	8.36187
4 h after dark	7.875056666666667	7.60463	8.04292
8 h after dark	8.097466666666666	7.998589999999999	8.156789999999999
12 h after dark	8.29815	8.13625	8.46069