condition	mean	min	max
4 h after light	7.49545	7.41269	7.554539999999999
8 h after light	7.434433333333334	7.28147	7.5271300000000005
12 h after light	7.50749	7.34475	7.621180000000001
4 h after dark	7.625023333333333	7.456689999999999	7.8444899999999995
8 h after dark	7.659846666666667	7.46822	7.879289999999999
12 h after dark	7.93235	7.91032	7.96443