condition	mean	min	max
4 h after light	4.4	4.4	4.4
8 h after light	4.55	4.1	5.0
12 h after light	5.85	3.0	8.7
4 h after dark	7.4	6.7	8.1
8 h after dark	7.85	6.0	9.7
12 h after dark	5.25	4.3	6.2