condition	mean	min	max
4 h after light	7.17976	7.1439699999999995	7.21017
8 h after light	6.721793333333333	6.50887	6.91828
12 h after light	6.4342999999999995	6.138	6.80129
4 h after dark	6.780266666666666	6.43957	7.214289999999999
8 h after dark	6.841146666666667	6.55428	7.11867
12 h after dark	6.90878	6.6301	7.18475