condition	mean	min	max
0 h after light	13.3496	11.4966	15.2026
4 h after light	8.713195	6.09139	11.335
8 h after light	9.792935	8.89417	10.6917
4 h after dark	34.26705	27.886	40.6481
8 h after dark	16.60755	14.946	18.2691
12 h after dark	14.40855	13.3182	15.4989