condition	mean	min	max
4 h after light	11.8	11.8	11.8
8 h after light	15.6	15.2	16.0
12 h after light	17.1	16.8	17.4
4 h after dark	17.05	12.5	21.6
8 h after dark	16.3	12.1	20.5
12 h after dark	10.1	6.8	13.4