condition	mean	min	max
4 h after light	2.6	2.6	2.6
8 h after light	8.7	3.2	14.2
12 h after light	10.7	3.2	18.2
4 h after dark	9.55	2.0	17.1
8 h after dark	10.0	1.2	18.8
12 h after dark	3.2	1.6	4.8