condition	mean	min	max
4 h after light	4.1	4.1	4.1
8 h after light	1.7	1.5	1.9
12 h after light	1.9	1.2	2.6
4 h after dark	3.05	2.3	3.8
8 h after dark	2.7	2.3	3.1
12 h after dark	1.1	1.0	1.2