condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	9.3	1.5	17.1
12 h after light	2.1	1.7	2.5
4 h after dark	10.85	7.2	14.5
8 h after dark	2.7	1.6	3.8
12 h after dark	2.3	1.5	3.1