condition	mean	min	max
4 h after light	2.5	2.5	2.5
8 h after light	5.4	2.5	8.3
12 h after light	18.1	11.7	24.5
4 h after dark	21.15	20.2	22.1
8 h after dark	12.799999999999999	5.2	20.4
12 h after dark	9.200000000000001	1.8	16.6