condition	mean	min	max
4 h after light	2.0	2.0	2.0
8 h after light	3.2	2.5	3.9
12 h after light	4.9	4.0	5.8
4 h after dark	11.3	8.6	14.0
8 h after dark	5.35	4.4	6.3
12 h after dark	3.75	2.7	4.8