condition	mean	min	max
4 h after light	3.6	3.6	3.6
8 h after light	3.5	2.5	4.5
12 h after light	3.35	3.0	3.7
4 h after dark	4.0	2.3	5.7
8 h after dark	4.1	4.0	4.2
12 h after dark	7.05	6.5	7.6