1848 2010 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.