condition	mean	min	max
0 h after light	8.283005	6.95423	9.61178
4 h after light	13.4086	11.5826	15.2346
8 h after light	16.5834	14.6763	18.4905
4 h after dark	13.40025	13.1111	13.6894
8 h after dark	9.773695	8.94049	10.6069
12 h after dark	10.54925	10.4331	10.6654