condition	mean	min	max
4 h after light	0.6	0.6	0.6
8 h after light	8.65	6.5	10.8
12 h after light	18.05	11.1	25.0
4 h after dark	19.6	14.9	24.3
8 h after dark	15.95	10.6	21.3
12 h after dark	1.9000000000000001	1.6	2.2