1871 2010 1871 -0.112 0.004 -0.527 -0.682 -0.398 0.027 0.333 0.028 -0.768 -0.719 0.039 0.594 1872 0.395 -0.253 -0.949 -1.070 0.385 0.296 -0.064 0.627 0.818 0.858 1.123 1.262 1873 0.872 0.800 0.398 -0.029 0.015 0.366 0.199 0.449 -0.178 0.674 0.901 0.332 1874 0.066 0.131 -0.072 -0.130 0.383 0.561 0.727 1.362 0.581 0.594 0.933 0.194 1875 -0.387 -0.801 -1.300 0.117 0.716 0.730 0.530 1.058 1.270 0.992 -0.323 -0.193 1876 -0.687 -0.382 -0.891 0.389 1.568 0.519 0.101 -0.009 -0.454 -0.319 -0.845 -0.373 1877 -0.417 -1.106 -1.460 -1.909 -1.727 -1.470 -1.849 -1.338 -1.810 -2.223 -3.012 -0.548 1878 -1.164 -1.280 -1.371 -1.215 -0.589 -1.522 -0.332 0.414 0.485 0.450 -0.166 0.684 1879 0.578 0.186 -0.099 -2.397 1.633 1.823 2.073 1.372 0.469 0.672 0.432 0.077 1880 0.572 0.237 0.351 0.139 0.460 0.080 0.167 0.794 0.216 0.575 0.077 -0.759 1881 -0.164 -0.795 -0.794 -0.361 -0.560 -0.867 0.550 -1.014 -0.040 -0.288 0.948 -0.632 1882 0.728 0.672 0.569 -0.349 2.295 0.956 -0.240 -0.311 -0.076 0.547 0.842 0.540 1883 -0.318 -0.001 -0.926 -1.538 -0.432 0.512 -0.490 0.162 0.778 0.175 -0.394 -0.481 1884 0.043 -0.760 0.216 -0.423 -0.516 -0.961 -0.946 -0.867 -0.251 0.796 -0.705 -1.056 1885 -0.288 -0.058 -0.601 -1.388 -0.570 -0.538 -0.372 -1.001 -1.033 -0.741 -0.749 1.142 1886 -0.154 -1.110 -3.164 1.575 0.737 -0.148 0.072 1.404 1.856 1.349 0.881 2.195 1887 0.848 0.697 0.895 1.343 1.579 0.134 -0.986 -0.573 -0.219 0.126 -0.528 -0.097 1888 -0.231 -0.400 -1.061 -1.089 -0.405 -1.040 -1.140 -1.965 -0.944 -1.509 -1.923 -2.149 1889 -1.940 -1.605 -1.744 -2.204 -2.163 0.376 0.386 0.334 0.379 -0.096 0.878 1.543 1890 0.994 0.360 0.532 -0.092 0.361 0.726 -1.028 0.693 0.982 0.853 -0.163 0.274 1891 1.192 0.061 -0.662 -0.923 -0.006 -1.200 -2.679 -1.110 -0.878 -0.336 -0.410 -0.116 1892 -0.480 -1.304 0.441 -0.344 0.391 0.530 -0.249 0.651 0.726 1.281 0.766 0.247 1893 0.499 0.542 0.549 0.283 0.975 2.172 2.289 1.912 1.202 1.021 0.921 0.674 1894 1.453 1.029 0.951 1.175 0.462 0.406 0.305 0.226 0.035 0.609 -0.297 0.734 1895 0.919 0.551 -0.151 0.129 -0.091 -0.095 -0.752 -0.558 -0.994 -0.015 -0.867 -0.114 1896 0.292 0.977 -0.194 -0.835 -1.726 -0.631 -1.090 -1.545 -1.297 -1.388 -1.440 -1.025 1897 -1.650 -1.268 -2.399 -1.954 -1.302 0.843 -0.093 0.203 -0.196 -0.017 -0.171 0.330 1898 0.525 0.563 0.627 -0.481 -0.447 0.232 -0.210 0.178 -0.187 -0.270 -0.951 -0.157 1899 0.279 -0.045 0.612 -0.323 -0.803 -1.047 -1.206 -1.113 -0.952 -1.231 -1.588 -1.473 1900 -1.840 -1.081 -2.185 -2.686 -1.081 -0.796 -0.951 -0.135 -0.757 -1.125 -1.326 -0.902 1901 -1.139 -0.055 -0.386 -1.159 -0.532 0.385 -0.995 -0.688 -0.894 -0.597 0.096 -0.405 1902 -0.101 -0.694 -1.012 -2.214 -3.276 -1.926 -2.875 -2.093 -2.448 -2.523 -3.752 -2.554 1903 -3.097 -2.209 -2.506 -3.744 -1.673 -1.509 -1.115 -1.124 -0.930 -0.427 -1.026 -0.174 1904 -0.021 0.351 -0.846 -0.326 -0.258 -1.117 -1.326 -1.128 -0.979 -1.115 -1.664 -1.066 1905 -1.350 -1.446 -3.208 -1.963 -1.625 -1.767 -2.352 -2.259 -2.207 -1.774 -2.287 -1.311 1906 -1.573 -0.846 -1.345 -2.666 -1.141 -0.905 -0.141 -0.938 0.232 0.029 -0.930 -0.479 1907 -0.219 -0.689 -0.370 -0.503 -1.348 -0.814 -1.323 -1.606 -1.439 -0.164 -0.647 -0.072 1908 -1.344 0.250 -0.816 -0.731 -1.320 -1.391 -0.669 0.219 -1.274 -0.304 0.350 -0.057 1909 -0.260 -0.555 -0.197 -0.579 -0.084 0.685 0.747 1.015 0.133 1.079 0.982 1.062 1910 1.469 1.615 0.459 0.446 -0.084 1.292 1.631 1.433 1.010 0.327 0.513 0.799 1911 0.726 0.305 1.057 0.661 0.671 0.255 -0.467 0.680 0.285 -0.263 -0.470 -0.706 1912 -1.884 -1.010 -0.920 -1.330 -0.783 -0.640 0.263 -0.307 0.051 -0.503 -0.569 -0.486 1913 0.512 0.269 0.413 -0.830 -1.845 -1.164 -1.192 -0.663 -1.260 -0.791 -1.702 -1.059 1914 -0.787 -1.162 0.053 -0.907 -1.229 -1.852 -2.099 -1.891 -1.300 -0.966 -0.445 -0.378 1915 -2.521 -2.333 -1.747 -2.256 -1.516 -0.491 -0.473 0.378 0.452 -1.306 -0.984 0.208 1916 0.146 -0.387 -0.794 -0.604 -0.959 -0.574 0.603 1.039 0.746 0.818 1.084 1.114 1917 0.472 0.156 0.343 0.564 -0.044 0.382 0.973 1.249 0.847 0.758 1.186 0.387 1918 0.534 0.433 -1.323 -0.423 -0.990 -1.628 -1.699 -0.689 -1.230 -1.130 -1.412 -1.712 1919 -2.095 -1.816 -2.093 -1.834 -1.136 -1.092 -0.545 -1.077 -0.684 -0.608 -0.178 -0.599 1920 -0.706 -1.657 -1.603 -1.207 -0.739 -0.030 -0.383 -0.714 -1.012 -1.330 -1.317 -0.408 1921 -0.463 0.108 0.575 -1.573 -0.130 0.062 0.003 -0.926 -0.067 -0.010 -0.287 -0.444 1922 -0.559 -0.010 -0.584 -1.135 -1.537 0.507 -1.232 -0.934 -0.109 -0.269 -0.667 0.467 1923 -0.102 -0.268 -0.195 -0.776 -1.297 -0.482 -2.053 -1.417 -1.481 -1.414 -1.529 -0.552 1924 -1.522 -0.519 -0.683 -1.425 0.196 0.209 0.582 0.573 0.350 -0.021 0.903 0.378 1925 -0.180 -0.102 -0.147 -1.657 -1.527 -0.975 -1.950 -1.359 -1.162 -1.877 -0.548 -1.262 1926 -0.963 -1.373 -1.761 -0.955 -0.672 -1.758 -1.143 -0.256 0.044 -0.879 -1.105 -0.305 1927 0.222 -0.959 -0.072 -2.004 -0.967 0.268 -0.619 -0.016 -0.466 -0.934 -0.989 -0.910 1928 -1.604 0.003 0.048 -0.510 -2.093 -1.454 -0.727 0.416 0.237 0.242 -0.520 0.170 1929 -0.140 0.224 -0.146 -0.847 -1.473 -0.657 -1.492 -0.901 -0.871 -0.839 -0.588 -1.396 1930 -0.899 -0.771 -1.169 -1.713 -1.552 -0.903 -1.763 -1.841 -2.052 -0.706 -1.794 -1.405 1931 -1.092 -2.350 -0.919 -1.600 -1.620 -0.430 -0.413 -0.188 0.142 -0.757 -0.304 0.485 1932 -0.298 -0.602 -0.619 -2.476 -0.818 -1.053 -1.636 -0.615 -1.150 0.055 -0.538 0.082 1933 -0.768 -0.190 -1.602 -1.129 0.258 -0.336 0.088 0.019 0.699 0.853 0.658 0.570 1934 0.441 -0.044 -0.360 -0.667 -1.575 -0.363 -0.145 -0.364 -0.423 -0.182 -0.148 -0.173 1935 -0.322 -0.233 -0.021 -1.085 -0.705 -0.226 0.289 0.025 -0.115 0.063 -0.499 -0.216 1936 -0.232 -0.811 -0.036 -1.218 -0.264 -0.277 0.512 -0.471 0.031 -0.289 -1.612 -0.569 1937 -0.350 -0.753 -0.696 -1.230 -0.569 0.461 -0.595 0.229 -0.193 -0.441 -0.354 0.212 1938 0.066 0.300 -0.191 -0.273 -0.005 0.554 1.060 1.613 0.533 1.029 0.196 1.161 1939 0.333 0.548 -0.285 -0.252 -1.033 -0.252 -0.306 0.365 -0.990 -0.794 0.040 -0.689 1940 -0.241 -0.590 -1.426 -1.701 -1.085 -1.998 -1.784 -0.763 -1.118 -0.893 -0.053 -1.690 1941 -0.990 -0.774 -0.813 -1.600 -1.581 -0.459 -1.723 -0.817 -0.840 -1.972 -1.202 -1.298 1942 -1.487 -0.573 -0.008 -0.022 2.111 1.620 0.783 2.238 1.537 0.856 0.129 1.787 1943 -0.296 -0.110 -2.089 -1.021 0.242 -0.559 -0.263 0.524 -0.544 0.574 -0.409 -0.762 1944 -0.401 0.186 0.684 -0.142 -0.798 -0.228 -1.071 -0.036 -0.092 -0.399 0.497 0.374 1945 0.849 0.784 1.455 0.131 0.074 1.963 1.205 1.587 0.444 -0.028 -0.142 0.759 1946 0.201 0.757 -0.290 -0.500 -0.319 -1.474 -0.184 0.065 -0.977 -0.625 0.574 -0.652 1947 -0.961 0.298 -0.344 -0.707 -0.964 -0.024 0.735 0.521 0.670 -0.292 0.333 -0.323 1948 -0.440 0.008 -0.791 -1.022 -1.589 -1.466 -0.990 -0.708 -1.120 0.229 -0.574 -0.935 1949 -0.922 -0.440 0.219 -0.723 -0.128 -0.409 -0.317 -0.415 -0.134 0.265 -0.582 0.212 1950 -0.032 1.209 0.931 0.370 0.449 1.536 1.271 0.507 0.315 0.740 0.485 1.504 1951 1.596 0.581 -0.467 -0.371 -0.818 0.549 -0.848 -0.228 -0.595 -0.659 -0.329 -0.082 1952 -0.628 -0.417 -0.067 -0.824 0.631 0.414 0.017 -0.326 -0.767 0.208 -0.401 -0.870 1953 0.296 -0.474 -0.497 0.099 -2.939 -0.363 -0.053 -1.624 -1.379 0.450 0.030 -0.081 1954 0.792 0.082 0.088 0.663 0.444 0.141 0.618 1.105 0.339 0.301 0.223 1.386 1955 -0.587 1.510 0.652 -0.043 1.901 1.611 2.025 1.582 1.067 1.457 1.011 1.030 1956 1.100 1.178 1.044 1.020 1.921 0.875 1.184 0.784 -0.582 1.605 -0.571 0.503 1957 0.231 -0.129 0.120 0.214 -0.937 0.275 -0.455 -0.957 -1.643 -0.469 -1.931 -0.395 1958 -1.722 -0.448 -0.272 0.008 -0.560 -0.021 0.433 1.330 -0.358 -0.155 -0.681 -0.685 1959 -0.621 -1.051 0.686 0.107 0.266 -0.648 -0.744 -0.517 -0.211 0.465 0.485 0.564 1960 0.171 -0.048 0.576 0.541 0.154 -0.722 0.456 0.398 0.405 -0.246 0.116 0.333 1961 -0.315 0.640 -1.995 1.141 0.107 -0.080 0.101 0.103 -0.272 -0.464 0.773 1.183 1962 1.529 0.330 0.183 0.416 1.302 0.504 -0.148 0.354 0.225 0.897 -0.001 0.178 1963 0.806 0.393 0.835 0.157 0.392 -1.019 -0.262 -0.184 -0.973 -1.462 -1.255 -1.045 1964 -0.458 -0.220 0.729 1.226 -0.011 0.932 0.881 1.715 1.324 1.461 -0.074 0.010 1965 -0.359 0.231 0.527 -1.100 -0.017 -1.240 -3.188 -0.854 -1.412 -1.005 -2.352 0.087 1966 -0.957 -0.183 -1.021 -0.447 -0.935 0.215 -0.367 0.254 -0.674 -0.403 -0.320 -0.409 1967 1.277 1.202 0.779 -0.254 -0.306 0.843 -0.023 0.752 0.210 -0.258 -0.733 -0.749 1968 0.394 0.719 0.216 -0.009 1.564 1.210 0.698 -0.130 -0.658 -0.142 -0.639 0.349 1969 -1.000 -0.471 0.387 -0.542 -0.676 0.166 -1.066 -0.434 -1.380 -1.087 -0.154 0.302 1970 -1.146 -0.966 0.264 -0.108 0.437 1.034 -0.674 0.618 1.013 1.071 1.548 1.600 1971 0.230 1.473 2.353 2.122 0.909 0.335 -0.045 1.787 1.621 1.795 0.281 0.060 1972 0.120 0.789 0.432 -0.043 -1.583 -0.987 -2.185 -0.304 -0.988 -0.433 -0.400 -0.931 1973 -0.337 -1.045 0.411 0.113 0.141 1.171 0.504 1.223 1.235 1.015 2.790 1.413 1974 1.981 1.422 2.203 1.156 1.050 0.279 1.482 0.840 1.140 1.015 -0.155 -0.068 1975 -0.469 0.944 1.631 1.237 0.658 1.265 2.487 2.341 2.297 1.954 1.534 2.091 1976 1.243 1.394 1.640 0.265 -0.109 -0.120 -1.708 -1.043 -1.609 0.480 0.863 -0.353 1977 -0.159 0.909 -0.412 -0.553 -0.844 -1.094 -1.320 -0.770 -0.837 -0.883 -1.084 -0.780 1978 0.068 -1.776 0.363 -0.165 2.263 0.661 0.802 0.454 -0.019 -0.368 -0.215 0.128 1979 -0.281 0.940 0.170 -0.433 0.311 0.671 -1.236 -0.397 0.060 -0.207 -0.840 -0.984 1980 0.000 -0.012 -1.231 -2.362 -2.090 -2.193 -2.223 -0.907 -1.269 -0.474 -0.637 -0.263 1981 0.338 0.021 -1.270 0.015 1.220 1.395 1.393 0.735 0.530 -0.473 0.099 0.340 1982 0.839 0.015 0.415 -0.576 -0.978 -2.074 -2.749 -2.404 -2.156 -1.864 -2.888 -1.845 1983 -2.872 -2.516 -2.158 -0.987 0.658 -0.074 -0.510 0.060 1.094 0.519 -0.141 0.019 1984 0.203 0.624 -0.423 0.542 0.315 -0.368 0.391 0.730 0.338 -0.330 0.150 -0.060 1985 -0.432 1.051 0.281 0.915 0.322 -0.902 -0.348 1.115 -0.243 -0.355 -0.176 0.118 1986 0.950 -1.262 0.617 0.310 -0.227 1.326 0.331 -0.334 -0.601 0.763 -1.487 -1.227 1987 -0.701 -1.043 -1.169 -1.620 -1.551 -1.276 -1.777 -0.798 -1.081 -0.187 -0.119 -0.381 1988 -0.275 -0.436 0.240 0.044 1.176 0.647 1.710 2.077 2.302 1.898 1.941 1.102 1989 1.294 0.783 0.979 1.607 1.375 0.971 1.100 -0.249 0.553 0.845 -0.541 -0.587 1990 -0.166 -1.490 -0.622 0.206 1.816 0.238 0.523 -0.335 -0.850 -0.090 -0.585 -0.265 1991 0.414 0.146 -0.684 -0.932 -1.421 -0.047 -0.027 -0.371 -1.697 -1.167 -0.720 -1.811 1992 -2.526 -0.715 -2.057 -1.104 0.424 -0.836 -0.622 0.418 0.079 -1.409 -0.897 -0.696 1993 -0.957 -0.773 -0.179 -1.298 -0.556 -0.913 -0.907 -1.044 -0.632 -1.329 0.207 0.338 1994 -0.152 0.216 -0.652 -1.518 -0.782 -0.322 -1.534 -1.314 -1.552 -0.873 -0.383 -0.892 1995 -0.219 0.105 0.742 -1.195 -0.676 0.352 0.755 0.371 0.078 0.059 0.233 -0.496 1996 0.958 0.214 1.140 0.943 0.341 1.775 1.063 1.043 0.845 0.744 0.025 0.829 1997 0.340 1.279 -0.647 -0.916 -1.826 -1.919 -1.088 -1.867 -1.353 -1.549 -1.543 -0.787 1998 -2.047 -1.371 -2.263 -1.468 0.436 1.408 1.972 1.375 1.230 1.152 1.000 1.122 1999 1.410 0.669 1.081 1.782 0.305 0.101 0.437 0.057 -0.104 1.216 1.314 1.321 2000 0.334 1.204 1.329 1.605 0.452 -0.342 -0.486 0.731 1.024 1.031 2.039 0.633 2001 0.924 1.277 0.956 0.222 -0.785 0.303 -0.475 -0.497 0.092 -0.182 0.780 -0.928 2002 0.491 0.987 0.042 0.368 -0.565 -0.199 -0.619 -0.983 -0.496 -0.496 -0.389 -0.960 2003 0.021 -0.324 -0.155 0.106 -0.035 -0.704 0.716 0.186 -0.301 -0.216 -0.332 1.057 2004 -1.011 1.057 0.538 -0.994 1.722 -1.062 -0.651 -0.599 -0.491 -0.260 -1.109 -0.878 2005 0.246 -2.355 0.222 -0.725 -1.028 0.590 0.175 -0.357 0.290 1.268 -0.364 0.112 2006 1.623 0.402 1.950 1.339 -0.792 -0.236 -0.803 -0.991 -0.463 -1.267 0.443 -0.036 2007 -0.550 -0.061 0.413 0.253 0.201 1.096 -0.502 0.320 -0.068 1.094 1.157 1.668 2008 1.654 2.199 1.896 0.785 -0.299 0.917 0.399 1.450 1.485 1.624 1.720 1.442 2009 0.901 1.350 0.130 0.750 -0.187 -0.005 0.172 -0.125 -0.062 -1.678 -0.832 -0.768 2010 -1.034 -1.253 -0.691 1.540 0.944 0.160 1.959 1.601 2.211 1.510 1.397 2.514 -999 http://www.esrl.noaa.gov/psd/data/20thC_Rean/timeseries/monthly/SOI/ using climatology 1981-2010 and method from reference on webpage. 20CR Surface Pressure.