condition	mean	min	max
4 h after light	1.8	1.8	1.8
8 h after light	4.7	3.7	5.7
12 h after light	4.4	2.4	6.4
4 h after dark	6.2	2.5	9.9
8 h after dark	2.75	2.6	2.9
12 h after dark	4.25	3.6	4.9