condition mean min max 4 h after light 65.999 64.0717 67.9263 8 h after light 60.312650000000005 56.9727 63.6526 12 h after light 54.286550000000005 48.5645 60.0086 4 h after dark 54.569100000000006 50.3194 58.8188 8 h after dark 54.23595 50.7249 57.747 12 h after dark 72.3674 68.998 75.7368