condition	mean	min	max
4 h after light	17.0	17.0	17.0
8 h after light	10.1	8.6	11.6
12 h after light	16.15	11.1	21.2
4 h after dark	14.3	13.2	15.4
8 h after dark	41.0	40.0	42.0
12 h after dark	20.05	15.0	25.1