condition	mean	min	max
4 h after light	9.0717	8.96785	9.15783
8 h after light	8.628133333333333	8.543619999999999	8.71834
12 h after light	8.812523333333333	8.75188	8.88916
4 h after dark	8.866876666666666	8.81065	8.90575
8 h after dark	8.927470000000001	8.79997	9.003860000000001
12 h after dark	9.28027	9.21257	9.325330000000001