condition	mean	min	max
4 h after light	4.9	4.9	4.9
8 h after light	6.1	3.7	8.5
12 h after light	8.25	5.0	11.5
4 h after dark	8.75	7.3	10.2
8 h after dark	6.85	4.3	9.4
12 h after dark	3.35	3.1	3.6