condition	mean	min	max
4 h after light	6.0	6.0	6.0
8 h after light	6.35	6.3	6.4
12 h after light	8.1	7.7	8.5
4 h after dark	5.15	4.2	6.1
8 h after dark	7.5	6.8	8.2
12 h after dark	5.949999999999999	5.8	6.1