condition	mean	min	max
4 h after light	15.2	15.2	15.2
8 h after light	16.05	7.1	25.0
12 h after light	15.05	4.1	26.0
4 h after dark	44.8	40.3	49.3
8 h after dark	26.5	21.2	31.8
12 h after dark	18.05	13.5	22.6