condition	mean	min	max
4 h after light	8.5	8.5	8.5
8 h after light	4.95	4.0	5.9
12 h after light	3.0	2.7	3.3
4 h after dark	5.65	3.3	8.0
8 h after dark	7.35	3.6	11.1
12 h after dark	4.4	3.3	5.5