condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	0.9	0.8	1.0
12 h after light	1.05	1.0	1.1
4 h after dark	10.55	4.6	16.5
8 h after dark	8.05	2.0	14.1
12 h after dark	10.3	8.9	11.7