condition	mean	min	max
4 h after light	4.2	4.2	4.2
8 h after light	8.0	6.0	10.0
12 h after light	8.15	6.8	9.5
4 h after dark	10.3	5.4	15.2
8 h after dark	7.35	5.2	9.5
12 h after dark	5.1	3.7	6.5