total: 141 usable: 124 with permanent-surface runways:

0.392085 1.5423% 1963 1.372880 0.728396 1.5697% 1962 2.184966 0.457673 2.2421% 1961 2.418684 0.413448 0.9709% 1960 3.678732 0.271833 1.6442% 1959 2.068058 0.483546 2.3579% 1958 2.020417 0.494947 2.0623% 1957 0.432391 2.312720 3.5571% 1956 3.557019 0.281134 3.3098% 1955 3.317092 0.301469 3.4226% 1954 0.531312 1.882134 1.5421% 1953 3.500009 0.285714 1.5703% 1952 3.187404 0.313735 1.5948% 1951 0.717142 1.394425 5.0183% 1950 0.922776 1.083686 1.7034% 1949 0.325485 3.072340 -0.4250% 1948 2.107238 0.474555 6.7886% 1947 2.326405 0.429848 13.9149% 1946 1.732241 0.577287 22.7896% 1945 0.266436 3.753244 3.2661% 1944 2.154907 0.464057 -13.0688% 1919 0.106148 9.420778 15.7925% 1918 1.041106 0.960517 14.2845% 1917 0.054189 18.453887 16.6637% 1916 0.093983 10.640167 20.0069% 1915 1.417927 0.705255 9.1939% 1914 0.083732 11.942806 2.3510% 1913 1.250000 0.800000 1.1940% 1912 0.552618 1.809567 1.1977% 1911 0.680344 1.469844 2.4765% 1910 1.000000 1.000000 -2.0001% 1925 0.993358 1.006686 0.6731% 1924 0.097194 10.288733 2.0549% 1923 1.057961 0.945214 2.8137% 1921 1.797490 0.556331 -7.1894% 1920 2.039898 0.490221 1.3234% 1943 1.034288 0.966848 2.7232% 1942 2.161763 0.462586 6.5229% 1941 1.232163 0.811581 6.1527% 1940 0.129999 7.692364 2.3623% 1939 1.693232 0.590587 -1.5482% 1938 0.054660 18.294761 -1.5312% 1937 0.281724 3.549572 3.9669% 1936 1.749956 0.571443 3.2811% 1934 1.070161 0.934439 8.9328% 1933 0.142488 7.018136 -2.6088% 1932 1.513147 0.660874 -11.5407% 1931 1.007775 0.992285

tonality