condition	mean	min	max
4 h after light	7.94383	7.89975	7.9661800000000005
8 h after light	8.116109999999999	8.03852	8.23102
12 h after light	8.850206666666667	8.75327	9.00752
4 h after dark	8.456196666666667	8.36701	8.54761
8 h after dark	8.444096666666667	8.169939999999999	8.61273
12 h after dark	8.188790000000001	8.09833	8.31644