condition	mean	min	max
4 h after light	8.962976666666668	8.7977	9.06853
8 h after light	8.89831	8.78663	9.06039
12 h after light	9.0994	9.04923	9.1572
4 h after dark	8.94159	8.78699	9.17426
8 h after dark	8.85501	8.491480000000001	9.21819
12 h after dark	8.767106666666667	8.625910000000001	8.96942