| year | latitude | mean lat. | running mean |
| 1900 | |||
| 1901 | |||
| 1902 | 58.018 | 54.40771 | |
| 1903 | 49.476 | 54.40771 | |
| 1904 | 53.366 | 54.40771 | 54.279 |
| 1905 | 56.569 | 54.40771 | 53.062 |
| 1906 | 53.966 | 54.40771 | 54.7072 |
| 1907 | 51.933 | 54.40771 | 53.415 |
| 1908 | 57.702 | 54.40771 | 52.5642 |
| 1909 | 46.905 | 54.40771 | 51.5764 |
| 1910 | 52.315 | 54.40771 | 53.0726 |
| 1911 | 49.027 | 54.40771 | 52.3378 |
| 1912 | 59.414 | 54.40771 | 54.3346 |
| 1913 | 54.028 | 54.40771 | 54.2946 |
| 1914 | 56.889 | 54.40771 | 53.7476 |
| 1915 | 52.115 | 54.40771 | 52.1094 |
| 1916 | 46.292 | 54.40771 | 52.8204 |
| 1917 | 51.223 | 54.40771 | 52.8764 |
| 1918 | 57.583 | 54.40771 | 53.897 |
| 1919 | 57.169 | 54.40771 | 55.6116 |
| 1920 | 57.218 | 54.40771 | 56.8612 |
| 1921 | 54.865 | 54.40771 | 56.1234 |
| 1922 | 57.471 | 54.40771 | 56.0414 |
| 1923 | 53.894 | 54.40771 | 56.0862 |
| 1924 | 56.759 | 54.40771 | 57.0812 |
| 1925 | 57.442 | 54.40771 | 57.1936 |
| 1926 | 59.84 | 54.40771 | 58.2046 |
| 1927 | 58.033 | 54.40771 | 57.8156 |
| 1928 | 58.949 | 54.40771 | 56.8664 |
| 1929 | 54.814 | 54.40771 | 56.8216 |
| 1930 | 52.696 | 54.40771 | 54.4938 |
| 1931 | 59.616 | 54.40771 | 52.8986 |
| 1932 | 46.394 | 54.40771 | 52.6948 |
| 1933 | 50.973 | 54.40771 | 53.0658 |
| 1934 | 53.795 | 54.40771 | 52.9838 |
| 1935 | 54.551 | 54.40771 | 52.8738 |
| 1936 | 59.206 | 54.40771 | 54.2364 |
| 1937 | 45.844 | 54.40771 | 54.244 |
| 1938 | 57.786 | 54.40771 | 55.1076 |
| 1939 | 53.833 | 54.40771 | 55.1678 |
| 1940 | 58.869 | 54.40771 | 57.7246 |
| 1941 | 59.507 | 54.40771 | 56.577 |
| 1942 | 58.628 | 54.40771 | 57.638 |
| 1943 | 52.048 | 54.40771 | 57.1594 |
| 1944 | 59.138 | 54.40771 | 56.0208 |
| 1945 | 56.476 | 54.40771 | 54.8818 |
| 1946 | 53.814 | 54.40771 | 54.8192 |
| 1947 | 52.933 | 54.40771 | 52.6742 |
| 1948 | 51.735 | 54.40771 | 50.6396 |
| 1949 | 48.413 | 54.40771 | 50.6474 |
| 1950 | 46.303 | 54.40771 | 49.534 |
| 1951 | 53.853 | 54.40771 | 50.9394 |
| 1952 | 47.366 | 54.40771 | 51.8498 |
| 1953 | 58.762 | 54.40771 | 52.8062 |
| 1954 | 52.965 | 54.40771 | 51.8654 |
| 1955 | 51.085 | 54.40771 | 51.9982 |
| 1956 | 49.149 | 54.40771 | 51.5538 |
| 1957 | 48.03 | 54.40771 | 52.7756 |
| 1958 | 56.54 | 54.40771 | 54.037 |
| 1959 | 59.074 | 54.40771 | 55.9658 |
| 1960 | 57.392 | 54.40771 | 56.3662 |
| 1961 | 58.793 | 54.40771 | 57.0258 |
| 1962 | 50.032 | 54.40771 | 56.9548 |
| 1963 | 59.838 | 54.40771 | 55.3934 |
| 1964 | 58.719 | 54.40771 | 53.5544 |
| 1965 | 49.585 | 54.40771 | 53.8568 |
| 1966 | 49.598 | 54.40771 | 52.252 |
| 1967 | 51.544 | 54.40771 | 49.5078 |
| 1968 | 51.814 | 54.40771 | 51.5648 |
| 1969 | 44.998 | 54.40771 | 51.3342 |
| 1970 | 59.87 | 54.40771 | 50.6808 |
| 1971 | 48.445 | 54.40771 | 51.4128 |
| 1972 | 48.277 | 54.40771 | 52.8502 |
| 1973 | 55.474 | 54.40771 | 51.5136 |
| 1974 | 52.185 | 54.40771 | 53.256 |
| 1975 | 53.187 | 54.40771 | 55.5682 |
| 1976 | 57.157 | 54.40771 | 55.4974 |
| 1977 | 59.838 | 54.40771 | 56.2014 |
| 1978 | 55.12 | 54.40771 | 56.6988 |
| 1979 | 55.705 | 54.40771 | 57.1792 |
| 1980 | 55.674 | 54.40771 | 55.2418 |
| 1981 | 59.559 | 54.40771 | 56.2918 |
| 1982 | 50.151 | 54.40771 | 57.023 |
| 1983 | 60.37 | 54.40771 | 56.934 |
| 1984 | 59.361 | 54.40771 | 56.9568 |
| 1985 | 55.229 | 54.40771 | 58.8982 |
| 1986 | 59.673 | 54.40771 | 57.6236 |
| 1987 | 59.858 | 54.40771 | 55.8336 |
| 1988 | 53.997 | 54.40771 | 56.2822 |
| 1989 | 50.411 | 54.40771 | 55.764 |
| 1990 | 57.472 | 54.40771 | 55.5306 |
| 1991 | 57.082 | 54.40771 | 54.4952 |
| 1992 | 58.691 | 54.40771 | 56.2128 |
| 1993 | 48.82 | 54.40771 | 55.8328 |
| 1994 | 58.999 | 54.40771 | 54.203 |
| 1995 | 55.572 | 54.40771 | 53.0768 |
| 1996 | 48.933 | 54.40771 | |
| 1997 | 53.06 | 54.40771 |