condition mean min max 4 h after light 1182.821827 783.163943 1582.479711 8 h after light 897.9316134999999 799.462826 996.400401 12 h after light 732.097714 708.693843 755.501585 4 h after dark 1324.488285 978.233605 1670.742965 8 h after dark 1321.6547925 789.269894 1854.039691 12 h after dark 1412.307644 1412.307644 1412.307644