condition	mean	min	max
4 h after light	1.7	1.7	1.7
8 h after light	2.05	1.9	2.2
12 h after light	18.6	2.0	35.2
4 h after dark	5.75	1.7	9.8
8 h after dark	2.4	2.3	2.5
12 h after dark	2.1	2.1	2.1