condition mean min max 4 h after light 9.320416999999999 8.95894 9.681894 8 h after light 8.4733225 8.1495 8.797145 12 h after light 9.188853 9.008823 9.368883 4 h after dark 10.4021095 9.983708 10.820511 8 h after dark 9.368883 9.368883 9.368883 12 h after dark 9.479 9.479 9.479