condition	mean	min	max
4 h after light	33.6	33.6	33.6
8 h after light	8.0	7.3	8.7
12 h after light	22.85	5.7	40.0
4 h after dark	27.5	26.1	28.9
8 h after dark	21.85	11.5	32.2
12 h after dark	9.9	5.3	14.5