condition	mean	min	max
4 h after light	7.766843333333333	7.639889999999999	7.8756699999999995
8 h after light	7.62087	7.502680000000001	7.70944
12 h after light	7.443673333333333	7.19088	7.71612
4 h after dark	7.606346666666667	7.39297	7.7217899999999995
8 h after dark	7.37498	7.35045	7.4043
12 h after dark	7.319146666666667	7.18757	7.510330000000001