condition	mean	min	max
4 h after light	11.7	11.7	11.7
8 h after light	2.25	2.2	2.3
12 h after light	2.5	1.8	3.2
4 h after dark	8.35	7.1	9.6
8 h after dark	18.3	2.9	33.7
12 h after dark	3.3	3.1	3.5