condition	mean	min	max
4 h after light	8.852683333333333	8.736130000000001	8.98221
8 h after light	8.927573333333333	8.691930000000001	9.13994
12 h after light	8.836286666666666	8.5759	9.016869999999999
4 h after dark	8.39038	8.27771	8.57832
8 h after dark	8.12174	7.913060000000001	8.51834
12 h after dark	7.852599999999999	7.7023399999999995	8.002469999999999