condition	mean	min	max
4 h after light	9.09736	9.00169	9.233789999999999
8 h after light	8.508803333333333	8.29743	8.615310000000001
12 h after light	8.450196666666667	8.25188	8.59957
4 h after dark	8.156320000000001	7.908239999999999	8.30386
8 h after dark	8.61656	8.37079	8.74916
12 h after dark	8.63209	8.39546	8.76708