condition	mean	min	max
4 h after light	9.475776666666667	9.25858	9.73691
8 h after light	9.23512	9.03678	9.51292
12 h after light	9.40908	9.27927	9.61403
4 h after dark	8.78927	8.60228	9.15828
8 h after dark	8.67632	8.39427	9.00694
12 h after dark	8.493616666666668	8.37296	8.72723