condition	mean	min	max
4 h after light	24.1	24.1	24.1
8 h after light	13.25	4.0	22.5
12 h after light	14.05	7.8	20.3
4 h after dark	13.3	10.5	16.1
8 h after dark	10.9	9.0	12.8
12 h after dark	4.6	3.8	5.4