condition	mean	min	max
4 h after light	1.1	1.1	1.1
8 h after light	3.5	1.9	5.1
12 h after light	2.0	1.5	2.5
4 h after dark	1.65	1.6	1.7
8 h after dark	2.75	1.3	4.2
12 h after dark	2.9	1.9	3.9