condition	mean	min	max
4 h after light	8.195971	7.610652	8.78129
8 h after light	10.6521975	9.627245	11.67715
12 h after light	9.5897725	8.457119	10.722426
4 h after dark	9.217811000000001	8.808377	9.627245
8 h after dark	16.2970105	11.267804	21.326217
12 h after dark	8.485459	8.485459	8.485459