condition	mean	min	max
4 h after light	7.706436666666667	7.309939999999999	8.031830000000001
8 h after light	8.926893333333332	8.57424	9.51602
12 h after light	7.42053	7.01585	7.759580000000001
4 h after dark	6.983890000000001	6.627000000000001	7.277080000000001
8 h after dark	7.383843333333333	7.18893	7.5441899999999995
12 h after dark	6.872363333333333	6.77549	6.975789999999999