condition	mean	min	max
4 h after light	7.2	7.2	7.2
8 h after light	21.1	4.7	37.5
12 h after light	33.5	29.4	37.6
4 h after dark	30.3	20.5	40.1
8 h after dark	20.25	19.5	21.0
12 h after dark	48.65	24.2	73.1