condition	mean	min	max
4 h after light	8.81097	8.62308	8.94696
8 h after light	8.886773333333334	8.79646	9.0169
12 h after light	8.811983333333332	8.400139999999999	9.0427
4 h after dark	9.06095	9.00874	9.121889999999999
8 h after dark	9.009640000000001	8.881730000000001	9.11871
12 h after dark	8.655776666666666	8.589739999999999	8.72605