condition	mean	min	max
4 h after light	8.0	8.0	8.0
8 h after light	33.0	28.0	38.0
12 h after light	20.9	16.0	25.8
4 h after dark	9.75	6.4	13.1
8 h after dark	24.8	21.5	28.1
12 h after dark	3.2	3.0	3.4