condition	mean	min	max
4 h after light	8.91823	8.85357	8.95903
8 h after light	8.854759999999999	8.77029	8.91644
12 h after light	8.969746666666666	8.86375	9.16215
4 h after dark	8.86806	8.699539999999999	8.96585
8 h after dark	8.925966666666666	8.82729	9.08363
12 h after dark	8.5191	8.36267	8.7229