condition	mean	min	max
4 h after light	6.170306666666667	5.97357	6.38604
8 h after light	6.0621833333333335	5.8678099999999995	6.3709
12 h after light	6.044103333333333	5.9029300000000005	6.3162199999999995
4 h after dark	6.153426666666666	5.99811	6.33458
8 h after dark	6.18017	5.87481	6.50114
12 h after dark	6.13366	5.9574300000000004	6.37412