condition	mean	min	max
4 h after light	15.5	15.5	15.5
8 h after light	33.45	26.2	40.7
12 h after light	4.15	2.6	5.7
4 h after dark	21.65	20.1	23.2
8 h after dark	17.0	8.3	25.7
12 h after dark	23.6	14.3	32.9