condition	mean	min	max
4 h after light	19.2	19.2	19.2
8 h after light	15.15	12.0	18.3
12 h after light	18.95	17.5	20.4
4 h after dark	25.65	23.1	28.2
8 h after dark	17.75	17.4	18.1
12 h after dark	14.05	10.4	17.7