year month AMT (°C) 1881 1 -8.2 1881 2 -8.5 1881 3 -8.8 1881 4 -4.7 1881 5 -1.3 1881 6 3.1 1881 7 7.1 1881 8 8.1 1881 9 4.8 1881 10 2.7 1881 11 -3.7 1881 12 -3.4 1882 1 -4.6 1882 2 -6.0 1882 3 -4.7 1882 4 -1.5 1882 5 1.3 1882 6 4.0 1882 7 9.4 1882 8 10.6 1882 9 7.3 1882 10 3.6 1882 11 -3.7 1882 12 -6.4 1883 1 -4.4 1883 2 -2.9 1883 3 -4.0 1883 4 1.4 1883 5 3.0 1883 6 8.0 1883 7 8.0 1883 8 8.0 1883 9 5.3 1883 10 1.3 1883 11 0.3 1883 12 -3.4 1884 1 -6.0 1884 2 -3.4 1884 3 -2.0 1884 4 -3.9 1884 5 0.2 1884 6 5.7 1884 7 8.5 1884 8 8.7 1884 9 6.7 1884 10 2.5 1884 11 -1.5 1884 12 -5.9 1885 1 -7.0 1885 2 -3.7 1885 3 -3.9 1885 4 -1.2 1885 5 -0.4 1885 6 4.3 1885 7 9.4 1885 8 9.2 1885 9 5.8 1885 10 -0.6 1885 11 -3.2 1885 12 -5.8 1886 1 -8.0 1886 2 -4.3 1886 3 -2.5 1886 4 -2.1 1886 5 0.9 1886 6 4.8 1886 7 9.2 1886 8 9.5 1886 9 5.8 1886 10 3.3 1886 11 -0.2 1886 12 -5.2 1887 1 -2.9 1887 2 -2.1 1887 3 -4.7 1887 4 -0.4 1887 5 4.3 1887 6 5.0 1887 7 9.5 1887 8 8.9 1887 9 6.9 1887 10 -0.2 1887 11 -3.4 1887 12 -6.8 1888 1 -7.0 1888 2 -7.8 1888 3 -7.4 1888 4 -3.6 1888 5 1.3 1888 6 5.0 1888 7 7.5 1888 8 8.5 1888 9 4.9 1888 10 0.3 1888 11 -2.2 1888 12 -4.9 1889 1 -5.3 1889 2 -6.0 1889 3 -5.9 1889 4 -0.6 1889 5 3.6 1889 6 7.1 1889 7 8.1 1889 8 9.4 1889 9 7.1 1889 10 3.8 1889 11 0.5 1889 12 -1.2 1890 1 -5.0 1890 2 -2.4 1890 3 -2.4 1890 4 -1.1 1890 5 1.3 1890 6 5.8 1890 7 9.7 1890 8 10.0 1890 9 8.4 1890 10 1.2 1890 11 -2.2 1890 12 -1.8 1891 1 -6.5 1891 2 -3.1 1891 3 -5.5 1891 4 -1.2 1891 5 0.7 1891 6 4.8 1891 7 8.7 1891 8 6.5 1891 9 4.8 1891 10 2.1 1891 11 -2.8 1891 12 -3.2 1892 1 -7.5 1892 2 -7.0 1892 3 -1.9 1892 4 -2.0 1892 5 1.0 1892 6 4.3 1892 7 7.1 1892 8 7.5 1892 9 6.4 1892 10 -0.4 1892 11 -1.1 1892 12 -7.8 1893 1 -9.1 1893 2 -8.4 1893 3 -7.5 1893 4 -2.7 1893 5 2.1 1893 6 4.6 1893 7 7.1 1893 8 7.9 1893 9 3.9 1893 10 2.2 1893 11 -4.8 1893 12 -3.7 1894 1 -3.6 1894 2 -4.2 1894 3 -4.3 1894 4 0.9 1894 5 3.6 1894 6 7.4 1894 7 9.5 1894 8 10.9 1894 9 4.4 1894 10 -0.5 1894 11 -2.1 1894 12 -5.0 1895 1 -6.7 1895 2 -7.2 1895 3 -6.0 1895 4 -1.2 1895 5 3.8 1895 6 7.3 1895 7 7.6 1895 8 7.5 1895 9 6.0 1895 10 1.2 1895 11 -1.3 1895 12 -2.6 1896 1 -6.9 1896 2 -4.5 1896 3 -3.1 1896 4 0.6 1896 5 3.4 1896 6 6.3 1896 7 9.5 1896 8 9.0 1896 9 7.0 1896 10 1.0 1896 11 -3.6 1896 12 -3.9 1897 1 -3.2 1897 2 -7.1 1897 3 -6.1 1897 4 2.2 1897 5 7.3 1897 6 5.7 1897 7 9.3 1897 8 8.7 1897 9 7.2 1897 10 3.4 1897 11 -1.8 1897 12 -4.6 1898 1 -4.6 1898 2 -6.0 1898 3 -5.2 1898 4 1.4 1898 5 3.7 1898 6 6.6 1898 7 10.5 1898 8 10.4 1898 9 8.2 1898 10 2.2 1898 11 -1.6 1898 12 -5.1 1899 1 -6.2 1899 2 -6.4 1899 3 -7.8 1899 4 -3.2 1899 5 -0.5 1899 6 4.1 1899 7 8.7 1899 8 8.0 1899 9 7.3 1899 10 1.0 1899 11 -1.0 1899 12 -4.6 1900 1 -5.6 1900 2 -8.3 1900 3 -4.9 1900 4 -1.1 1900 5 1.4 1900 6 4.0 1900 7 5.8 1900 8 7.8 1900 9 4.3 1900 10 1.8 1900 11 0.3 1900 12 -5.6 1901 1 -1.9 1901 2 -8.9 1901 3 -5.1 1901 4 0.1 1901 5 1.6 1901 6 6.5 1901 7 9.4 1901 8 7.8 1901 9 7.5 1901 10 5.5 1901 11 -2.8 1901 12 -6.5 1902 1 -7.4 1902 2 -7.3 1902 3 -8.0 1902 4 -3.6 1902 5 0.3 1902 6 2.9 1902 7 7.2 1902 8 7.2 1902 9 4.5 1902 10 -1.9 1902 11 -2.1 1902 12 -1.8 1903 1 -5.5 1903 2 -4.4 1903 3 -1.9 1903 4 -1.1 1903 5 2.0 1903 6 5.9 1903 7 7.1 1903 8 7.6 1903 9 5.3 1903 10 -0.6 1903 11 -1.2 1903 12 -3.1 1904 1 -2.8 1904 2 -7.3 1904 3 -3.8 1904 4 0.8 1904 5 2.0 1904 6 6.2 1904 7 8.1 1904 8 8.6 1904 9 7.3 1904 10 3.9 1904 11 -3.6 1904 12 -6.3 1905 1 -4.8 1905 2 -5.5 1905 3 -3.2 1905 4 -1.0 1905 5 3.3 1905 6 5.9 1905 7 8.8 1905 8 9.0 1905 9 7.0 1905 10 0.4 1905 11 -3.0 1905 12 -2.2 1906 1 -3.2 1906 2 -5.0 1906 3 -6.0 1906 4 -0.8 1906 5 2.4 1906 6 6.3 1906 7 8.9 1906 8 6.8 1906 9 6.1 1906 10 2.0 1906 11 -2.0 1906 12 -3.5 1907 1 -8.4 1907 2 -3.9 1907 3 -1.4 1907 4 0.6 1907 5 1.4 1907 6 7.8 1907 7 8.7 1907 8 8.4 1907 9 5.1 1907 10 3.2 1907 11 0.6 1907 12 -5.1 1908 1 -4.9 1908 2 -5.6 1908 3 -2.8 1908 4 -0.7 1908 5 1.8 1908 6 6.5 1908 7 8.4 1908 8 8.2 1908 9 5.9 1908 10 2.6 1908 11 -2.9 1908 12 -2.3 1909 1 -2.9 1909 2 -4.1 1909 3 -4.7 1909 4 -3.1 1909 5 0.9 1909 6 4.5 1909 7 8.6 1909 8 10.2 1909 9 7.0 1909 10 2.8 1909 11 -3.3 1909 12 -4.0 1910 1 -4.3 1910 2 -1.7 1910 3 -2.1 1910 4 -1.6 1910 5 2.9 1910 6 4.9 1910 7 6.7 1910 8 6.7 1910 9 5.9 1910 10 0.3 1910 11 -2.5 1910 12 -3.7 1911 1 -4.0 1911 2 -6.3 1911 3 -3.7 1911 4 -2.3 1911 5 3.0 1911 6 5.2 1911 7 8.5 1911 8 9.0 1911 9 7.5 1911 10 0.2 1911 11 0.0 1911 12 -1.5 1912 1 -7.0 1912 2 -10.0 1912 3 -4.8 1912 4 -3.1 1912 5 0.8 1912 6 4.7 1912 7 8.6 1912 8 7.9 1912 9 4.8 1912 10 -0.5 1912 11 -1.7 1912 12 -4.0 1913 1 -3.4 1913 2 -5.3 1913 3 -3.8 1913 4 -0.3 1913 5 1.5 1913 6 5.0 1913 7 10.8 1913 8 10.0 1913 9 6.7 1913 10 0.0 1913 11 -0.8 1913 12 -3.3 1914 1 -6.2 1914 2 -4.8 1914 3 -4.3 1914 4 -0.5 1914 5 3.1 1914 6 7.2 1914 7 8.8 1914 8 8.7 1914 9 6.2 1914 10 2.8 1914 11 -0.6 1914 12 -2.9 1915 1 -5.5 1915 2 -6.0 1915 3 -6.9 1915 4 0.3 1915 5 1.3 1915 6 5.2 1915 7 10.3 1915 8 9.5 1915 9 5.2 1915 10 1.9 1915 11 -3.3 1915 12 -7.7 1916 1 -5.3 1916 2 -4.5 1916 3 -5.4 1916 4 -2.4 1916 5 -0.5 1916 6 4.8 1916 7 9.9 1916 8 8.3 1916 9 5.9 1916 10 0.3 1916 11 -0.3 1916 12 -4.2 1917 1 -6.0 1917 2 -9.2 1917 3 -7.4 1917 4 -3.4 1917 5 -0.8 1917 6 6.1 1917 7 8.1 1917 8 8.9 1917 9 5.3 1917 10 2.3 1917 11 -2.4 1917 12 -4.9 1918 1 -9.5 1918 2 -5.8 1918 3 -3.0 1918 4 0.2 1918 5 1.0 1918 6 5.9 1918 7 8.4 1918 8 7.5 1918 9 6.7 1918 10 2.3 1918 11 0.7 1918 12 -3.0 1919 1 -4.1 1919 2 -7.0 1919 3 -4.5 1919 4 -2.6 1919 5 3.2 1919 6 7.4 1919 7 9.4 1919 8 9.5 1919 9 7.2 1919 10 1.5 1919 11 -2.9 1919 12 -4.8 1920 1 -6.2 1920 2 -4.3 1920 3 -0.4 1920 4 0.1 1920 5 4.7 1920 6 7.1 1920 7 11.3 1920 8 10.7 1920 9 8.0 1920 10 2.2 1920 11 0.4 1920 12 -1.1 1921 1 -5.4 1921 2 -4.8 1921 3 -2.7 1921 4 1.7 1921 5 4.9 1921 6 8.7 1921 7 8.7 1921 8 9.8 1921 9 6.4 1921 10 0.9 1921 11 -2.4 1921 12 -3.1 1922 1 -4.2 1922 2 -3.8 1922 3 -4.3 1922 4 -0.7 1922 5 4.5 1922 6 7.6 1922 7 10.8 1922 8 9.8 1922 9 9.0 1922 10 3.1 1922 11 0.8 1922 12 -4.3 1923 1 -2.7 1923 2 -4.6 1923 3 -2.6 1923 4 -1.9 1923 5 1.8 1923 6 6.0 1923 7 9.4 1923 8 8.0 1923 9 6.8 1923 10 3.5 1923 11 -0.9 1923 12 -2.8 1924 1 -4.6 1924 2 -7.0 1924 3 -4.3 1924 4 -1.8 1924 5 2.6 1924 6 4.4 1924 7 8.9 1924 8 11.2 1924 9 7.6 1924 10 4.5 1924 11 -0.1 1924 12 -1.2 1925 1 -1.1 1925 2 -3.6 1925 3 -5.3 1925 4 -1.0 1925 5 2.0 1925 6 5.6 1925 7 10 1925 8 9.5 1925 9 7.1 1925 10 1.2 1925 11 -3.0 1925 12 -5.1 1926 1 -5.1 1926 2 -6.6 1926 3 -3.3 1926 4 -1.7 1926 5 1.3 1926 6 4.7 1926 7 7.3 1926 8 8.0 1926 9 7.0 1926 10 0.4 1926 11 -1.2 1926 12 -4.9 1927 1 -7.2 1927 2 -3.5 1927 3 -4.5 1927 4 -1.3 1927 5 1.0 1927 6 5.4 1927 7 10.1 1927 8 10.1 1927 9 5.7 1927 10 0.8 1927 11 -2.5 1927 12 -3.7 1928 1 -4.3 1928 2 -3.1 1928 3 -2.2 1928 4 -0.4 1928 5 2.1 1928 6 4.6 1928 7 9.0 1928 8 9.5 1928 9 7.4 1928 10 0.3 1928 11 -2.6 1928 12 -2.9 1929 1 -6.0 1929 2 -5.4 1929 3 -6.0 1929 4 -4.8 1929 5 2.6 1929 6 4.6 1929 7 7.6 1929 8 9.4 1929 9 7.1 1929 10 3.0 1929 11 0.6 1929 12 -0.3 1930 1 -1.7 1930 2 -3.8 1930 3 -4.5 1930 4 -0.8 1930 5 3.4 1930 6 6.6 1930 7 9.7 1930 8 10.2 1930 9 4.8 1930 10 2.5 1930 11 -0.1 1930 12 -3.0 1931 1 -5.1 1931 2 -6.1 1931 3 -4.9 1931 4 -1.0 1931 5 2.9 1931 6 4.2 1931 7 10.2 1931 8 9.6 1931 9 5.2 1931 10 2.2 1931 11 0.9 1931 12 -0.9 1932 1 -3.2 1932 2 -4.8 1932 3 -4.4 1932 4 -0.9 1932 5 1.0 1932 6 5.1 1932 7 8.0 1932 8 9.5 1932 9 6.4 1932 10 1.6 1932 11 -0.8 1932 12 -0.7 1933 1 -2.6 1933 2 -5.5 1933 3 -5.3 1933 4 -1.8 1933 5 2.1 1933 6 6.3 1933 7 9.7 1933 8 10.0 1933 9 7.3 1933 10 2.3 1933 11 -0.8 1933 12 -3.3 1934 1 -1.9 1934 2 -5.3 1934 3 -2.8 1934 4 -2.5 1934 5 4.2 1934 6 5.6 1934 7 10.1 1934 8 9.6 1934 9 9.2 1934 10 3.6 1934 11 0.2 1934 12 -0.4 1935 1 -4.2 1935 2 -4.4 1935 3 -2.5 1935 4 -0.6 1935 5 1.1 1935 6 6.6 1935 7 7.7 1935 8 9.4 1935 9 5.5 1935 10 3.3 1935 11 1.2 1935 12 -1.6 1936 1 -5.4 1936 2 -7.5 1936 3 -5.4 1936 4 -0.5 1936 5 4.5 1936 6 8.3 1936 7 8.4 1936 8 10.9 1936 9 6.4 1936 10 2.5 1936 11 0.4 1936 12 -0.6 1937 1 -2.4 1937 2 -5.2 1937 3 -4.0 1937 4 1.7 1937 5 4.2 1937 6 8.7 1937 7 10.5 1937 8 12.7 1937 9 7.7 1937 10 4.3 1937 11 -0.6 1937 12 -3.9 1938 1 -3.7 1938 2 -1.5 1938 3 -1.9 1938 4 0.0 1938 5 3.1 1938 6 5.9 1938 7 11.6 1938 8 10.3 1938 9 9.3 1938 10 4.4 1938 11 1.5 1938 12 -0.8 1939 1 -4.1 1939 2 -4.6 1939 3 -3.4 1939 4 -1.6 1939 5 2.3 1939 6 6.2 1939 7 9.2 1939 8 10.8 1939 9 4.8 1939 10 2.0 1939 11 1.1 1939 12 -3.8 1940 1 -5.9 1940 2 -7.1 1940 3 -6.0 1940 4 -2.8 1940 5 3.6 1940 6 5.9 1940 7 7.9 1940 8 10.0 1940 9 7.3 1940 10 3.0 1940 11 -1.6 1940 12 -2.8 1941 1 -6.5 1941 2 -7.0 1941 3 -6.1 1941 4 -3.1 1941 5 0.5 1941 6 4.9 1941 7 9.6 1941 8 9.4 1941 9 5.9 1941 10 0.3 1941 11 -1.2 1941 12 -6.1 1942 1 -6.7 1942 2 -7.7 1942 3 -6.9 1942 4 -1.5 1942 5 0.5 1942 6 5.3 1942 7 8.5 1942 8 9.1 1942 9 6.2 1942 10 2.1 1942 11 -1.7 1942 12 -4.1 1943 1 -6.1 1943 2 -3.0 1943 3 -2.8 1943 4 -0.7 1943 5 3.5 1943 6 6.9 1943 7 9.8 1943 8 9.4 1943 9 6.9 1943 10 2.0 1943 11 0.3 1943 12 -0.8 1944 1 -3.1 1944 2 -3.7 1944 3 -2.5 1944 4 -2.3 1944 5 2.3 1944 6 5.9 1944 7 7.2 1944 8 8.9 1944 9 7.4 1944 10 4.2 1944 11 0.3 1944 12 -0.5 1945 1 -5.3 1945 2 -4.9 1945 3 -4.2 1945 4 0v 1945 5 2.4 1945 6 5.2 1945 7 9.4 1945 8 11.2 1945 9 7.0 1945 10 0.4 1945 11 -2.4 1945 12 -5.6 1946 1 -2.6 1946 2 -8.4 1946 3 -5.2 1946 4 -0.8 1946 5 2.3 1946 6 6.7 1946 7 9.5 1946 8 9.5 1946 9 8.5 1946 10 1.4 1946 11 -1.1 1946 12 0.3 1947 1 -3.3 1947 2 -7.0 1947 3 -6.8 1947 4 -0.5 1947 5 1.4 1947 6 6.4 1947 7 8.8 1947 8 9.4 1947 9 7.7 1947 10 2.7 1947 11 -0.7 1947 12 -2.7 1948 1 -6.5 1948 2 -4.7 1948 3 -4.3 1948 4 0.3 1948 5 4.0 1948 6 6.2 1948 7 8.8 1948 8 8.5 1948 9 7.3 1948 10 2.8 1948 11 0.0 1948 12 -2.3 1949 1 -3.6 1949 2 -2.3 1949 3 -3.5 1949 4 -0.4 1949 5 2.6 1949 6 4.6 1949 7 7.5 1949 8 8.5 1949 9 7.0 1949 10 1.1 1949 11 0.7 1949 12 -2.3 1950 1 -3.3 1950 2 -4.7 1950 3 -1.7 1950 4 1.5 1950 5 2.8 1950 6 6.0 1950 7 7.0 1950 8 10.9 1950 9 7.9 1950 10 5.1 1950 11 -0.7 1950 12 -1.4 1951 1 -5.9 1951 2 -5.6 1951 3 -3.9 1951 4 0.7 1951 5 1.3 1951 6 5.6 1951 7 6.9 1951 8 10.4 1951 9 6.2 1951 10 4.9 1951 11 -2.1 1951 12 -3.3 1952 1 -4.6 1952 2 -4.6 1952 3 -5.8 1952 4 -1.4 1952 5 2.0 1952 6 7.4 1952 7 10.1 1952 8 7.8 1952 9 6.5 1952 10 1.1 1952 11 -1.8 1952 12 -4.9 1953 1 -5.4 1953 2 -7.3 1953 3 -3.6 1953 4 -0.4 1953 5 2.6 1953 6 7.9 1953 7 8.2 1953 8 10.0 1953 9 5.7 1953 10 3.6 1953 11 1.3 1953 12 -0.3 1954 1 -2.9 1954 2 -5.6 1954 3 -2.7 1954 4 0.3 1954 5 3.8 1954 6 6.2 1954 7 10.5 1954 8 8.7 1954 9 6.6 1954 10 1.8 1954 11 -2.0 1954 12 -0.5 1955 1 -3.5 1955 2 -6.6 1955 3 -5.5 1955 4 -1.2 1955 5 2.2 1955 6 4.9 1955 7 7.9 1955 8 9.0 1955 9 7.1 1955 10 2.0 1955 11 -3.0 1955 12 -8.3 1956 1 -5.2 1956 2 -8.2 1956 3 -2.5 1956 4 -3.2 1956 5 3.3 1956 6 7.4 1956 7 7.3 1956 8 7.4 1956 9 5.0 1956 10 1.6 1956 11 -2.0 1956 12 -1.6 1957 1 -3.0 1957 2 -2.7 1957 3 -4.3 1957 4 -0.3 1957 5 2.4 1957 6 5.6 1957 7 10.4 1957 8 10.0 1957 9 6.8 1957 10 3.0 1957 11 0.3 1957 12 -4.0 1958 1 -6.4 1958 2 -4.7 1958 3 -4.8 1958 4 -2.0 1958 5 0.6 1958 6 5.5 1958 7 8.4 1958 8 8.8 1958 9 6.0 1958 10 2.9 1958 11 0.7 1958 12 -5.6 1959 1 -4.4 1959 2 -1.2 1959 3 -0.6 1959 4 -1.5 1959 5 3.4 1959 6 7.4 1959 7 9.6 1959 8 9.3 1959 9 5.7 1959 10 2.5 1959 11 0.4 1959 12 -3.4 1960 1 -4.4 1960 2 -6.0 1960 3 -1.5 1960 4 1.4 1960 5 4.5 1960 6 6.7 1960 7 13.5 1960 8 10.5 1960 9 7.7 1960 10 -0.6 1960 11 -2.5 1960 12 -3.5 1961 1 -3.6 1961 2 -3.7 1961 3 -2.2 1961 4 -2.4 1961 5 2.0 1961 6 8.1 1961 7 10.5 1961 8 10.2 1961 9 7.1 1961 10 6.3 1961 11 0.3 1961 12 -4.7 1962 1 -5.0 1962 2 -4.4 1962 3 -6.9 1962 4 -0.6 1962 5 1.6 1962 6 4.7 1962 7 8.0 1962 8 7.7 1962 9 6.6 1962 10 2.2 1962 11 0.9 1962 12 -3.9 1963 1 -5.4 1963 2 -7.6 1963 3 -7.3 1963 4 -0.7 1963 5 5.7 1963 6 5.1 1963 7 8.0 1963 8 8.2 1963 9 8.1 1963 10 3.4 1963 11 -1.8 1963 12 -4.4 1964 1 -3.4 1964 2 -6.2 1964 3 -1.5 1964 4 -1.6 1964 5 3v 1964 6 6.7 1964 7 10.9 1964 8 9.4 1964 9 6.4 1964 10 3.9 1964 11 -2.2 1964 12 -3.2 1965 1 -4.5 1965 2 -5.2 1965 3 -4.6 1965 4 -0.7 1965 5 0.7 1965 6 5.9 1965 7 6.9 1965 8 7.6 1965 9 6.4 1965 10 1.6 1965 11 -2.3 1965 12 -4.9 1966 1 -7.8 1966 2 -8.8 1966 3 -8.1 1966 4 -2.9 1966 5 1.0 1966 6 6.4 1966 7 9.9 1966 8 8.6 1966 9 4.5 1966 10 -0.2 1966 11 -0.2 1966 12 -4.5 1967 1 -6.2 1967 2 -5.0 1967 3 -1.1 1967 4 -0.1 1967 5 2.6 1967 6 7.0 1967 7 9.5 1967 8 10.3 1967 9 7.9 1967 10 2.4 1967 11 2.1 1967 12 -4.2 1968 1 -7.5 1968 2 -5.3 1968 3 -4.2 1968 4 -2.1 1968 5 0.4 1968 6 5.2 1968 7 6.7 1968 8 8.6 1968 9 4.1 1968 10 -1.1 1968 11 -1.6 1968 12 -1.8 1969 1 -6.7 1969 2 -9.7 1969 3 -4.7 1969 4 -2.2 1969 5 0.9 1969 6 4.6 1969 7 8.4 1969 8 9.1 1969 9 6.5 1969 10 3.7 1969 11 -0.8 1969 12 -3.5 1970 1 -3.2 1970 2 -8.3 1970 3 -2.4 1970 4 -2.8 1970 5 3.1 1970 6 7.3 1970 7 9.8 1970 8 10.7 1970 9 7.0 1970 10 3.4 1970 11 -1.8 1970 12 -2.3 1971 1 -5.3 1971 2 -6.3 1971 3 -5.9 1971 4 -2.4 1971 5 1.7 1971 6 4.1 1971 7 8.8 1971 8 9.3 1971 9 5.9 1971 10 1.2 1971 11 -4.4 1971 12 -3.3 1972 1 -3.6 1972 2 -4.6 1972 3 -2.5 1972 4 -0.8 1972 5 2.7 1972 6 8.4 1972 7 12.2 1972 8 11.7 1972 9 7.1 1972 10 2.9 1972 11 -2.1 1972 12 -0.2 1973 1 -3.3 1973 2 -4.2 1973 3 -3.5 1973 4 0.2 1973 5 3.3 1973 6 7.3 1973 7 11.7 1973 8 9.5 1973 9 5.5 1973 10 0.5 1973 11 -2.0 1973 12 -5.4 1974 1 -3.7 1974 2 -3.0 1974 3 -0.6 1974 4 -0.2 1974 5 2.1 1974 6 7.4 1974 7 11.6 1974 8 10.2 1974 9 8.5 1974 10 2.6 1974 11 -1.8 1974 12 -1.1 1975 1 -4.3 1975 2 -2.9 1975 3 -1.0 1975 4 0.0 1975 5 3.6 1975 6 5.6 1975 7 8.4 1975 8 7.5 1975 9 7.6 1975 10 1.4 1975 11 -0.5 1975 12 -4.3 1976 1 -5.6 1976 2 -4.3 1976 3 -3.1 1976 4 -0.1 1976 5 3.6 1976 6 5.5 1976 7 9.6 1976 8 9.7 1976 9 5.0 1976 10 1.3 1976 11 -2.3 1976 12 -2.9 1977 1 -4.8 1977 2 -4.8 1977 3 -4.2 1977 4 -1.8 1977 5 2.4 1977 6 6.0 1977 7 8.6 1977 8 8.3 1977 9 5.9 1977 10 1.6 1977 11 0.8 1977 12 -3.4 1978 1 -6.3 1978 2 -7.0 1978 3 -4.4 1978 4 -2.4 1978 5 2.9 1978 6 4.5 1978 7 7.0 1978 8 8.1 1978 9 5.5 1978 10 1.2 1978 11 -1.8 1978 12 -5.8 1979 1 -7.4 1979 2 -6.5 1979 3 -3.8 1979 4 -2.3 1979 5 2.5 1979 6 5.4 1979 7 9.2 1979 8 9.9 1979 9 7.4 1979 10 1.1 1979 11 -1.5 1979 12 -1.9 1980 1 -5.0 1980 2 -6.2 1980 3 -4.3 1980 4 0.4 1980 5 1.8 1980 6 6.7 1980 7 7.7 1980 8 9.1 1980 9 7.2 1980 10 2.4 1980 11 -2.9 1980 12 -5.1 1981 1 -5.9 1981 2 -6.4 1981 3 -6.2 1981 4 -2.4 1981 5 2.1 1981 6 5.1 1981 7 8.8 1981 8 8.8 1981 9 6.6 1981 10 3.4 1981 11 -0.7 1981 12 -5.7 1982 1 -6.1 1982 2 -4.1 1982 3 -2.6 1982 4 -0.3 1982 5 2.5 1982 6 3.9 1982 7 10.1 1982 8 8.1 1982 9 6.2 1982 10 1.9 1982 11 -0.6 1982 12 -2.1 1983 1 -2.5 1983 2 -4.2 1983 3 -1.9 1983 4 1.0 1983 5 2.3 1983 6 6.6 1983 7 10.0 1983 8 8.8 1983 9 7.8 1983 10 3.0 1983 11 -3.0 1983 12 -5.3 1984 1 -4.6 1984 2 -2.7 1984 3 -4.1 1984 4 -0.2 1984 5 4.7 1984 6 6.8 1984 7 8.7 1984 8 8.9 1984 9 6.4 1984 10 2.9 1984 11 -1.9 1984 12 -1.2 1985 1 -7.4 1985 2 -8.5 1985 3 -2.2 1985 4 -2.1 1985 5 1.9 1985 6 5.7 1985 7 8.8 1985 8 9.2 1985 9 7.3 1985 10 2.7 1985 11 -0.7 1985 12 -6.1 1986 1 -5.3 1986 2 -6.8 1986 3 -1.7 1986 4 -1.7 1986 5 2.8 1986 6 8.1 1986 7 8.2 1986 8 9.2 1986 9 4.9 1986 10 3.9 1986 11 0.2 1986 12 -5.5 1987 1 -5.6 1987 2 -7.2 1987 3 -4.4 1987 4 -1.7 1987 5 2.2 1987 6 4.9 1987 7 8.3 1987 8 7.0 1987 9 6.9 1987 10 6.0 1987 11 -2.9 1987 12 -4.6 1988 1 -5.2 1988 2 -4.0 1988 3 -4.4 1988 4 -2.9 1988 5 2.6 1988 6 6.3 1988 7 10.1 1988 8 9.3 1988 9 7.5 1988 10 2.3 1988 11 -3.7 1988 12 -5.6 1989 1 -3.5 1989 2 -3.6 1989 3 -0.9 1989 4 2.7 1989 5 5.1 1989 6 9.4 1989 7 10.1 1989 8 10.3 1989 9 7.8 1989 10 2.2 1989 11 0.6 1989 12 -3.7 1990 1 -5.5 1990 2 -0.3 1990 3 -1.9 1990 4 1.6 1990 5 2.4 1990 6 6.8 1990 7 10.1 1990 8 10.9 1990 9 7.6 1990 10 2.9 1990 11 -2.0 1990 12 -0.6 1991 1 -3.6 1991 2 -2.7 1991 3 -3.8 1991 4 0.8 1991 5 2.9 1991 6 6.9 1991 7 9.4 1991 8 10.3 1991 9 5.9 1991 10 3.1 1991 11 -0.3 1991 12 -1.5 1992 1 -1.8 1992 2 -1.9 1992 3 -0.7 1992 4 -1.3 1992 5 5.1 1992 6 7.2 1992 7 8.8 1992 8 8.8 1992 9 8.4 1992 10 -0.7 1992 11 -2.6 1992 12 -1.0 1993 1 -2.4 1993 2 -3.4 1993 3 -2.7 1993 4 -1.2 1993 5 3.0 1993 6 5.0 1993 7 7.9 1993 8 9.3 1993 9 4.5 1993 10 0.4 1993 11 -1.6 1993 12 -4.4 1994 1 -5.5 1994 2 -4.1 1994 3 -2.6 1994 4 1.9 1994 5 2.7 1994 6 5.9 1994 7 10.0 1994 8 10.8 1994 9 6.9 1994 10 1.5 1994 11 -1.8 1994 12 -1.5 1995 1 -3.2 1995 2 -3.1 1995 3 -1.3 1995 4 -0.1 1995 5 3.0 1995 6 6.9 1995 7 8.8 1995 8 8.5 1995 9 6.8 1995 10 1.7 1995 11 -2.6 1995 12 -5.5 1996 1 -2.6 1996 2 -6.1 1996 3 -1.8 1996 4 -1.7 1996 5 1.0 1996 6 5.5 1996 7 7.9 1996 8 10.3 1996 9 6.5 1996 10 3.7 1996 11 -0.2 1996 12 -3.4 1997 1 -5.6 1997 2 -4.9 1997 3 -2.1 1997 4 -2.9 1997 5 2.6 1997 6 5.4 1997 7 8.4 1997 8 10.6 1997 9 8.5 1997 10 2.5 1997 11 -1.6 1997 12 -2.7 1998 1 -4.8 1998 2 -8.9 1998 3 -4.2 1998 4 -2.3 1998 5 2.5 1998 6 4.5 1998 7 9.0 1998 8 9.4 1998 9 6.1 1998 10 2.5 1998 11 -3.4 1998 12 -3.3 1999 1 -6.6 1999 2 -6.0 1999 3 -2.7 1999 4 -0.3 1999 5 0.8 1999 6 7.7 1999 7 9.8 1999 8 9.0 1999 9 8.3 1999 10 4.3 1999 11 0.1 1999 12 -3.4 2000 1 -3.1 2000 2 -3.7 2000 3 -2.8 2000 4 -0.3 2000 5 3.3 2000 6 6.8 2000 7 9.8 2000 8 10.1 2000 9 7.7 2000 10 6.2 2000 11 1.2 2000 12 -2.8 2001 1 -1.5 2001 2 -4.8 2001 3 -4.7 2001 4 -0.8 2001 5 2.6 2001 6 7.8 2001 7 10.9 2001 8 9.7 2001 9 8.6 2001 10 2.7 2001 11 -1.8 2001 12 -2.5 2002 1 -3.5 2002 2 -4.3 2002 3 -2.5 2002 4 2.2 2002 5 3.8 2002 6 7.0 2002 7 11.6 2002 8 9.5 2002 9 6.1 2002 10 2.3 2002 11 -1.7 2002 12 -3.8 2003 1 -7.1 2003 2 -2.3 2003 3 -1.8 2003 4 0.2 2003 5 4.3 2003 6 5.5 2003 7 11.1 2003 8 10.4 2003 9 7.3 2003 10 3.7 2003 11 1.8 2003 12 -3.1 2004 1 -3.9 2004 2 -4.8 2004 3 -0.8 2004 4 1.6 2004 5 4.0 2004 6 6.9 2004 7 13.2 2004 8 11.7 2004 9 8.1 2004 10 3.3 2004 11 -0.8 2004 12 -0.9 2005 1 -2.4 2005 2 -3.1 2005 3 -3.9 2005 4 0.1 2005 5 3.7 2005 6 7.9 2005 7 10.2 2005 8 11.2 2005 9 7.6 2005 10 4.8 2005 11 2.0 2005 12 -1.3 2006 1 -2.5 2006 2 -4.7 2006 3 -3.0 2006 4 2.7 2006 5 4.7 2006 6 8.3 2006 7 9.6 2006 8 10.0 2006 9 7.0 2006 10 2.3 2006 11 -0.3