condition	mean	min	max
4 h after light	21.7	21.7	21.7
8 h after light	27.0	18.0	36.0
12 h after light	22.25	11.1	33.4
4 h after dark	8.4	6.0	10.8
8 h after dark	20.05	16.1	24.0
12 h after dark	15.5	9.0	22.0