condition	mean	min	max
4 h after light	8.1	8.1	8.1
8 h after light	6.15	5.8	6.5
12 h after light	5.1	4.6	5.6
4 h after dark	4.85	4.6	5.1
8 h after dark	6.199999999999999	5.8	6.6
12 h after dark	7.1	5.2	9.0