condition	mean	min	max
4 h after light	3.2	3.2	3.2
8 h after light	4.9	1.8	8.0
12 h after light	10.5	3.6	17.4
4 h after dark	3.35	3.1	3.6
8 h after dark	2.75	2.2	3.3
12 h after dark	9.0	3.0	15.0