condition	mean	min	max
4 h after light	8.03773	8.024629	8.050831
8 h after light	8.906764500000001	8.573861	9.239668
12 h after light	8.0374415	8.024244	8.050639
4 h after dark	9.209364	8.13573	10.282998
8 h after dark	8.657569500000001	8.545446	8.769693
12 h after dark	9.404812	9.404812	9.404812