condition	mean	min	max
4 h after light	3.4	3.4	3.4
8 h after light	4.7	3.1	6.3
12 h after light	6.9	6.1	7.7
4 h after dark	8.7	7.2	10.2
8 h after dark	5.75	4.1	7.4
12 h after dark	6.35	5.3	7.4