condition	mean	min	max
4 h after light	9.3	9.3	9.3
8 h after light	9.95	7.9	12.0
12 h after light	11.45	11.0	11.9
4 h after dark	11.1	8.1	14.1
8 h after dark	8.05	4.3	11.8
12 h after dark	14.9	13.7	16.1