condition	mean	min	max
4 h after light	2.0	2.0	2.0
8 h after light	8.6	2.2	15.0
12 h after light	1.95	1.5	2.4
4 h after dark	2.1	2.1	2.1
8 h after dark	2.5	1.6	3.4
12 h after dark	1.05	1.0	1.1