condition	mean	min	max
4 h after light	8.619019999999999	8.43909	8.89857
8 h after light	8.25521	7.7479	8.58853
12 h after light	8.18038	7.8387199999999995	8.4135
4 h after dark	8.357883333333334	8.014380000000001	8.82463
8 h after dark	8.648023333333333	8.41279	8.79447
12 h after dark	8.930103333333333	8.81757	8.987219999999999