condition	mean	min	max
4 h after light	8.22463	8.18027	8.27427
8 h after light	8.278416666666667	8.1488	8.38338
12 h after light	8.395246666666667	8.26507	8.49804
4 h after dark	8.606303333333333	8.55452	8.70475
8 h after dark	8.596119999999999	8.40922	8.75964
12 h after dark	8.8331	8.75276	8.988539999999999