condition	mean	min	max
4 h after light	8.12274	8.01426	8.20615
8 h after light	7.453546666666667	7.305280000000001	7.56885
12 h after light	7.606283333333333	7.5044699999999995	7.6715
4 h after dark	7.97809	7.846489999999999	8.09994
8 h after dark	7.991883333333333	7.843539999999999	8.0896
12 h after dark	8.180813333333333	8.13228	8.2607