condition	mean	min	max
4 h after light	2.3	2.3	2.3
8 h after light	14.25	2.7	25.8
12 h after light	5.75	5.0	6.5
4 h after dark	3.35	1.5	5.2
8 h after dark	2.1	2.0	2.2
12 h after dark	4.65	2.3	7.0