condition	mean	min	max
4 h after light	7.2	7.2	7.2
8 h after light	45.4	32.5	58.3
12 h after light	11.3	7.8	14.8
4 h after dark	17.5	13.8	21.2
8 h after dark	15.45	8.1	22.8
12 h after dark	17.9	15.5	20.3