condition	mean	min	max
4 h after light	8.518006666666668	8.272860000000001	8.64675
8 h after light	7.869683333333334	7.56723	8.18694
12 h after light	8.231116666666667	7.668539999999999	8.73068
4 h after dark	8.58534	8.39343	8.84914
8 h after dark	8.59817	8.325619999999999	8.97834
12 h after dark	8.08742	7.902410000000001	8.2726