condition	mean	min	max
0 h after light	7.292735	6.7745	7.81097
4 h after light	7.15853	6.25151	8.06555
8 h after light	7.5688949999999995	7.46108	7.67671
4 h after dark	9.873425000000001	9.57845	10.1684
8 h after dark	9.796595	9.64808	9.94511
12 h after dark	9.20437	8.16954	10.2392