condition	mean	min	max
4 h after light	8.934673333333334	8.80216	9.06625
8 h after light	9.031346666666666	8.9854	9.121789999999999
12 h after light	9.113273333333332	9.038889999999999	9.16799
4 h after dark	9.05132	9.006860000000001	9.084589999999999
8 h after dark	8.732563333333333	8.41832	8.95815
12 h after dark	8.667026666666667	8.499989999999999	8.85915