condition mean min max 0 h after light 4.00667 3.83261 4.18073 4 h after light 8.89884 7.55748 10.2402 8 h after light 11.430340000000001 9.94288 12.9178 4 h after dark 6.1596150000000005 5.87842 6.44081 8 h after dark 7.49757 7.29764 7.6975 12 h after dark 2.6061300000000003 2.46659 2.74567