condition	mean	min	max
4 h after light	6.0	6.0	6.0
8 h after light	9.200000000000001	1.6	16.8
12 h after light	21.0	19.0	23.0
4 h after dark	23.75	8.6	38.9
8 h after dark	15.0	10.1	19.9
12 h after dark	8.5	4.5	12.5