condition	mean	min	max
4 h after light	20.6	20.6	20.6
8 h after light	27.5	18.0	37.0
12 h after light	16.75	14.1	19.4
4 h after dark	15.0	12.1	17.9
8 h after dark	15.65	13.0	18.3
12 h after dark	14.65	4.5	24.8