condition	mean	min	max
4 h after light	4.5	4.5	4.5
8 h after light	37.1	8.8	65.4
12 h after light	15.7	7.7	23.7
4 h after dark	7.6	7.5	7.7
8 h after dark	21.6	10.8	32.4
12 h after dark	20.15	2.9	37.4