condition	mean	min	max
4 h after light	8.514176666666666	7.90976	8.88965
8 h after light	8.507909999999999	7.76006	8.88932
12 h after light	8.36168	7.879810000000001	8.64353
4 h after dark	7.685816666666667	7.0266399999999996	8.08813
8 h after dark	7.79429	7.25218	8.15512
12 h after dark	7.442559999999999	6.92634	7.71732