condition	mean	min	max
4 h after light	22.5	22.5	22.5
8 h after light	11.85	4.8	18.9
12 h after light	5.1	3.8	6.4
4 h after dark	5.6	4.8	6.4
8 h after dark	22.5	14.2	30.8
12 h after dark	2.95	1.0	4.9