condition	mean	min	max
4 h after light	7.446203333333334	7.2557100000000005	7.77493
8 h after light	7.364226666666666	7.0911	7.81664
12 h after light	7.322783333333334	6.98798	7.56225
4 h after dark	7.32534	7.018619999999999	7.6160000000000005
8 h after dark	7.261443333333333	7.01554	7.499039999999999
12 h after dark	7.331393333333334	7.0271300000000005	7.59623