condition	mean	min	max
4 h after light	8.927966666666666	8.85148	8.99262
8 h after light	8.590063333333333	8.528189999999999	8.68567
12 h after light	9.160493333333333	9.06172	9.33889
4 h after dark	8.62499	8.49667	8.769689999999999
8 h after dark	8.66919	8.49447	8.85073
12 h after dark	8.73772	8.638530000000001	8.81114