condition	mean	min	max
4 h after light	531.8205	505.819	557.822
8 h after light	470.1095	450.3	489.919
12 h after light	474.698	451.827	497.569
4 h after dark	534.482	514.296	544.582
8 h after dark	641.09	601.736	668.395
12 h after dark	601.696	570.613	620.824