condition	mean	min	max
4 h after light	1.6	1.6	1.6
8 h after light	2.2	1.7	2.7
12 h after light	1.95	1.9	2.0
4 h after dark	3.0	1.5	4.5
8 h after dark	8.85	3.3	14.4
12 h after dark	6.05	1.9	10.2