condition	mean	min	max
4 h after light	4.5	4.5	4.5
8 h after light	2.1	1.3	2.9
12 h after light	1.35	1.3	1.4
4 h after dark	2.4	1.4	3.4
8 h after dark	14.05	4.1	24.0
12 h after dark	1.75	1.2	2.3