condition	mean	min	max
4 h after light	18.5	18.5	18.5
8 h after light	16.4	15.4	17.4
12 h after light	35.3	29.7	40.9
4 h after dark	22.1	17.3	26.9
8 h after dark	27.6	21.6	33.6
12 h after dark	8.15	2.1	14.2