condition	mean	min	max
4 h after light	7.1	7.1	7.1
8 h after light	5.15	4.8	5.5
12 h after light	20.55	4.9	36.2
4 h after dark	21.3	9.4	33.2
8 h after dark	18.2	11.6	24.8
12 h after dark	11.55	4.5	18.6