condition	mean	min	max
4 h after light	8.6	8.6	8.6
8 h after light	9.95	6.6	13.3
12 h after light	15.75	11.4	20.1
4 h after dark	5.1	5.0	5.2
8 h after dark	9.1	7.6	10.6
12 h after dark	8.45	8.3	8.6