condition	mean	min	max
4 h after light	9.195945	8.404098	9.987792
8 h after light	8.394633500000001	8.155381	8.633886
12 h after light	8.471525999999999	7.963252	8.9798
4 h after dark	8.6408065	7.847138	9.434475
8 h after dark	10.108059	8.206109	12.010009
12 h after dark	8.633886	8.633886	8.633886