condition mean min max 4 h after light 6.12917 5.7443 6.51404 8 h after light 9.146854999999999 8.9057 9.38801 12 h after light 10.03782 9.71164 10.364 4 h after dark 16.094733333333334 15.2117 16.6539 8 h after dark 10.342166666666667 10.2242 10.516 12 h after dark 8.644893333333334 8.36543 9.08566