condition	mean	min	max
4 h after light	2.2	2.2	2.2
8 h after light	4.45	2.1	6.8
12 h after light	7.25	5.1	9.4
4 h after dark	2.35	1.8	2.9
8 h after dark	3.25	2.1	4.4
12 h after dark	1.3	1.1	1.5