condition	mean	min	max
4 h after light	2.5	2.5	2.5
8 h after light	1.4	0.8	2.0
12 h after light	8.35	1.4	15.3
4 h after dark	5.5	4.8	6.2
8 h after dark	8.1	2.0	14.2
12 h after dark	12.6	8.2	17.0