NAO_INDEX (ERA20C) ** undef = -9.99e+08 year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1900 0.549 -0.465 -1.241 0.083 0.454 -0.612 0.106 0.002 0.283 0.067 -0.875 0.560 1901 -0.041 -1.632 -0.825 -0.129 1.536 -0.484 0.657 0.606 -0.904 -0.072 0.956 -0.386 1902 0.070 -0.507 -0.080 -0.968 0.536 -1.085 0.537 0.273 -1.217 0.310 -1.157 0.304 1903 0.195 0.771 0.938 0.034 0.751 -1.155 -0.507 -1.642 -1.367 -0.300 1.087 -0.419 1904 0.635 0.566 -0.066 0.450 -0.420 -1.006 -0.487 -0.402 -0.934 0.116 0.962 -0.305 1905 0.756 0.013 0.381 -0.287 0.493 -0.139 0.228 -0.674 0.491 -1.591 -0.444 0.382 1906 0.499 0.619 0.616 1.270 0.980 -0.317 -0.388 0.037 -0.417 0.078 0.253 0.881 1907 0.148 0.560 0.912 -0.304 1.059 -0.307 -0.426 0.203 -0.240 -0.775 0.435 -0.069 1908 0.163 0.347 -0.261 -0.389 -0.545 1.046 0.602 0.604 0.006 -0.145 0.132 0.183 1909 0.444 -0.244 -0.984 -1.051 1.017 -0.580 -0.037 0.708 -1.451 0.493 0.313 -0.734 1910 0.997 0.916 0.185 0.247 0.569 -1.181 -0.733 -0.612 -0.877 -0.793 -0.342 -0.364 1911 0.164 0.847 -0.201 0.434 0.099 -0.084 0.290 -0.083 -0.023 -1.021 -1.384 -0.017 1912 -0.354 -0.403 0.049 1.173 -0.462 -0.804 -0.181 -1.709 -1.319 -0.104 0.989 0.512 1913 -0.061 0.187 0.767 -0.415 0.229 0.453 0.686 0.997 -1.554 -0.567 -0.351 0.632 1914 -0.498 0.511 -0.655 0.685 -0.674 0.793 -1.133 0.223 -0.366 -0.389 0.324 -0.336 1915 -0.015 0.035 -1.034 0.989 1.119 -0.901 -0.927 0.161 -1.733 -0.445 -0.010 -0.912 1916 0.996 0.789 -2.633 0.312 0.968 -0.247 -0.176 0.657 -0.964 0.682 -1.381 -1.138 1917 -1.322 -0.668 -0.541 -0.519 0.639 -0.522 -0.449 -0.361 1.150 0.525 0.765 0.088 1918 -0.784 0.729 0.016 0.202 0.493 0.348 -0.378 0.083 -0.016 0.399 -0.296 -0.552 1919 -0.585 -0.783 -0.669 0.380 1.225 0.446 -0.173 -0.018 -0.259 -1.229 -0.569 0.326 1920 1.388 1.011 1.562 -0.921 -0.835 -0.975 0.084 1.059 -0.305 -1.046 -0.643 -0.841 1921 0.657 -0.099 1.308 0.576 -0.054 0.283 -0.122 -0.249 0.117 0.216 -0.272 0.864 1922 -0.234 0.702 -0.463 -0.699 0.079 0.350 -0.809 -0.454 -0.489 -1.591 0.984 -0.006 1923 0.556 0.169 -0.466 -1.157 -0.082 -0.132 -0.175 -0.595 0.761 0.416 0.420 0.782 1924 -0.259 -0.721 -1.683 -1.188 -0.103 -0.686 -0.586 -0.254 0.679 -0.101 -0.250 0.237 1925 0.643 0.510 -0.965 0.331 -0.033 -0.236 -0.114 0.219 -0.478 -0.619 0.092 -0.854 1926 -0.121 0.051 -0.313 -1.314 0.946 -1.253 0.140 0.539 0.461 -0.402 -0.953 0.178 1927 0.643 -0.085 0.188 1.398 1.338 -0.185 -0.463 -0.919 -0.610 0.039 0.212 -1.529 1928 1.255 1.107 -1.107 -1.675 1.868 -1.332 0.645 -0.730 -0.372 -0.001 -0.686 0.188 1929 -1.718 -0.682 -0.949 -0.455 0.155 -0.955 -0.218 0.224 0.530 0.522 -0.886 -0.018 1930 0.399 -0.471 -0.554 -0.871 0.002 0.195 -1.069 -0.511 -1.883 -0.338 0.048 0.341 1931 -0.074 0.161 -1.319 0.233 0.523 -0.413 -0.765 -0.029 -1.431 0.026 -1.477 0.301 1932 0.810 -2.041 -1.410 0.190 0.904 -0.420 -0.429 1.011 0.465 -0.239 0.391 0.187 1933 0.477 -0.802 -0.464 0.130 0.895 0.089 0.326 0.354 -1.368 -1.158 0.505 -0.813 1934 0.776 -0.455 0.308 -0.868 -1.033 -0.797 -0.304 -0.170 -0.688 0.175 0.852 -1.085 1935 -0.261 1.276 -0.671 -0.787 2.041 -0.188 1.129 0.396 -0.158 0.494 -0.861 -0.797 1936 -0.801 -1.088 -0.705 -0.762 0.812 0.052 -1.541 1.309 -1.232 -0.086 0.488 0.883 1937 0.269 0.298 -1.242 -0.070 -0.449 0.792 0.045 0.896 -0.077 -0.100 -0.028 -0.978 1938 0.730 -0.455 0.611 1.626 -0.131 -0.239 0.007 0.921 -0.503 0.638 -0.894 -0.420 1939 -0.725 0.673 -0.274 -0.336 1.272 -0.428 -1.576 0.667 -2.050 -1.053 -0.549 -0.223 1940 -1.338 -0.688 -0.713 -0.030 0.426 -0.138 -0.568 1.644 -0.513 -0.701 -0.501 0.130 1941 -1.381 -0.457 -0.840 -1.130 0.462 0.130 0.508 -0.205 -1.194 -0.582 -0.668 0.352 1942 -0.171 -1.895 -0.931 -0.819 0.104 -0.558 -0.010 0.075 0.487 0.637 1.110 0.073 1943 -0.349 1.068 0.081 1.978 0.606 -0.118 0.219 -0.906 0.022 0.388 1.342 0.389 1944 0.840 -0.667 -0.488 0.144 -0.384 -0.585 -1.168 0.368 0.009 -0.174 0.049 0.278 1945 -1.042 0.981 -0.368 0.309 0.052 -0.115 -0.109 0.703 -0.122 -0.861 0.285 -0.845 1946 0.192 -0.448 -0.653 1.830 1.423 0.101 0.409 -0.802 -0.344 -1.142 -0.199 0.071 1947 -0.290 -1.317 -0.722 0.818 0.005 -0.600 0.036 1.831 0.808 -0.148 -0.093 -0.419 1948 0.494 0.059 0.725 0.795 -0.222 -0.751 -0.414 -0.765 0.488 0.618 -0.251 -0.022 1949 1.015 0.931 -0.125 1.821 -0.216 -0.482 0.471 0.601 -0.705 0.639 -0.475 0.433 1950 -0.477 0.754 -0.338 0.808 1.270 -0.214 -1.313 -1.372 1.335 0.537 -0.256 -0.240 1951 0.647 0.200 -0.795 0.493 1.328 -1.371 0.730 -1.084 -0.671 0.483 -0.524 0.895 1952 0.629 -0.802 -1.149 0.213 1.233 -0.338 0.762 -0.269 -1.119 -0.101 0.530 -0.386 1953 -0.323 -0.195 0.240 -0.680 0.730 -0.109 -0.369 -0.691 0.019 0.806 -0.036 0.517 1954 -0.330 0.162 -0.230 0.540 1.142 -0.230 0.055 -0.685 1.240 1.057 -0.671 0.762 1955 -0.636 -1.115 -1.165 0.181 -0.643 -0.387 1.882 1.407 0.390 -0.741 0.251 -0.037 1956 -0.041 -1.350 -0.394 -0.255 -1.416 0.833 -0.397 -1.164 -0.216 0.295 0.802 0.195 1957 0.656 0.076 -1.005 0.498 0.644 -1.115 -0.752 -0.009 -0.822 1.482 0.039 0.716 1958 0.189 -0.625 -1.411 0.462 -0.581 -1.211 -1.115 -1.242 -0.573 0.497 0.387 -0.562 1959 -0.708 0.814 0.266 -0.655 0.936 0.152 0.421 0.688 -0.436 0.101 -0.647 0.278 1960 -1.257 -0.904 -1.224 0.314 0.308 0.065 -0.790 -0.989 -0.369 -1.575 -1.790 0.759 1961 0.094 0.919 0.611 -1.225 0.669 1.095 -0.243 -0.380 0.527 -0.326 0.551 -1.120 1962 0.966 -0.024 -1.843 0.421 0.600 0.239 -0.694 -1.056 0.311 0.425 0.821 -0.268 1963 -1.919 -0.888 -0.463 -0.761 -1.746 -0.567 0.227 -0.928 0.815 1.175 -1.015 -0.942 1964 -0.838 -0.649 -1.094 -0.133 -0.901 0.520 1.649 -0.541 0.431 -0.110 0.316 0.268 1965 0.017 -2.121 -0.472 0.595 0.651 0.357 -0.887 -0.841 -0.163 -0.147 -0.841 0.250 1966 -0.846 -0.357 0.279 -1.582 -1.279 0.274 0.026 -0.710 0.343 -1.130 1.386 0.841 1967 -0.935 0.717 1.459 1.737 -0.196 1.065 0.205 -0.202 -0.419 1.358 0.865 -0.010 1968 0.231 -0.679 0.796 -0.959 0.478 0.080 -0.659 0.334 -1.081 -0.060 -1.216 -0.561 1969 -1.201 -1.229 -0.958 0.362 0.350 0.167 0.800 0.423 1.020 1.201 0.584 0.278 1970 -1.068 0.068 -0.774 -0.210 -0.675 0.785 -0.074 0.540 0.404 -0.256 -0.194 -0.541 1971 -0.127 0.075 -0.505 -0.219 -0.479 -1.341 0.325 0.169 0.027 1.155 1.782 0.629 1972 -0.395 -0.075 -0.057 0.450 -0.436 0.679 0.518 0.831 -1.210 -0.471 0.095 0.284 1973 -0.313 0.708 0.294 -0.131 -0.547 1.088 0.310 0.146 -0.168 -0.296 0.982 0.681 1974 0.572 0.239 -0.634 0.013 0.197 -0.318 -0.079 -1.193 1.030 -1.612 -0.596 1.290 1975 1.102 -0.127 -0.375 0.500 1.205 0.528 0.657 0.771 1.625 -0.407 0.388 0.910 1976 0.480 0.666 0.431 0.979 -1.103 0.433 0.314 2.291 -1.742 0.043 -0.213 -1.017 1977 -0.808 -0.306 -0.441 0.652 0.945 -0.076 -0.090 -0.431 0.321 0.347 0.077 -0.480 1978 0.798 -0.908 0.692 -1.323 -0.071 0.922 -1.089 0.369 0.608 0.423 0.255 -2.040 1979 -0.685 -0.207 0.176 -0.810 -1.306 0.862 0.074 -0.819 1.100 -0.116 0.021 0.462 1980 -1.066 0.167 -0.638 1.306 1.409 -0.377 -0.820 -0.272 0.712 -0.063 -0.096 0.905 1981 0.596 0.349 -0.599 0.626 -0.682 -0.026 0.454 1.372 -0.557 -0.226 0.551 -0.634 1982 -0.385 0.661 0.589 1.395 -0.592 -1.303 1.285 -0.629 1.875 0.404 -0.644 1.083 1983 1.685 -0.809 0.823 -0.595 -0.278 1.143 1.340 1.826 0.160 1.030 0.279 0.249 1984 1.670 0.465 -0.788 0.584 -0.106 -0.063 0.181 1.010 -0.211 0.987 -1.627 0.415 1985 -1.327 -0.448 -0.140 -0.072 0.706 -0.418 -0.478 -1.705 0.510 0.650 -0.531 -0.637 1986 0.693 -1.468 1.428 -0.543 -1.415 0.803 0.443 -0.948 -0.311 2.138 -0.694 0.578 1987 -1.250 -0.344 -0.076 0.566 0.936 -1.258 0.534 0.299 0.771 0.282 0.409 -0.736 1988 0.779 -0.164 0.125 -0.017 -0.075 1.346 -1.317 -1.121 0.447 -0.351 0.309 1.045 1989 1.058 1.717 1.205 -0.888 -0.758 0.435 1.571 -0.359 0.985 0.626 -0.091 -0.945 1990 0.953 1.926 1.658 1.913 1.301 -0.524 0.219 0.163 0.125 0.331 0.193 0.785 1991 0.242 -0.021 -0.586 0.872 1.033 -0.682 0.047 0.820 0.036 -0.571 0.042 0.855 1992 -0.320 1.039 0.902 0.023 -1.084 0.527 0.620 -1.602 -0.293 -1.862 -0.828 0.689 1993 1.637 -0.073 0.612 -0.053 0.894 -0.789 -1.141 0.172 -1.250 -1.657 -0.638 0.871 1994 0.901 -0.104 1.809 -0.213 0.020 1.282 0.444 0.020 -0.062 0.001 -0.564 0.783 1995 0.942 1.232 0.998 0.026 0.588 0.188 0.186 1.736 -0.480 0.716 0.207 -0.979 1996 -1.052 -0.225 -1.270 -1.156 0.202 0.338 1.148 0.389 -0.975 0.511 0.392 -1.106 1997 -0.623 1.788 0.830 1.065 0.731 -1.289 0.248 0.535 0.256 -0.847 -1.438 -0.590 1998 -0.448 0.730 0.679 -1.784 0.678 -1.322 -0.771 0.251 -1.626 0.453 -0.269 0.238 1999 0.526 0.277 -0.542 -0.459 -0.375 0.921 0.083 -0.080 0.123 0.009 0.895 0.757 2000 0.113 1.405 0.237 -1.120 -0.695 -0.032 -0.113 0.308 -0.233 0.795 -0.849 -1.202 2001 -0.203 -0.166 -0.756 0.096 0.753 -0.557 0.371 -0.710 -1.433 0.137 1.746 -0.823 2002 0.314 1.203 0.178 0.224 -0.051 -0.532 0.041 0.788 -1.770 -0.790 -1.561 -1.036 2003 0.029 0.294 0.013 -0.363 -1.145 -0.816 -0.267 0.741 0.011 -1.561 -0.907 0.396 2004 -0.182 -0.625 -0.171 -0.285 0.386 -0.569 -0.189 -0.429 0.177 -1.229 1.527 1.490 2005 0.398 -1.323 -1.712 -0.457 0.166 -0.682 -0.208 0.257 0.833 0.347 0.552 -0.137 2006 0.003 -0.902 -1.235 0.754 -0.124 1.137 0.512 0.805 -0.715 -0.872 -0.165 0.534 2007 0.707 -0.188 0.725 1.270 -1.319 -1.481 -1.339 0.504 0.229 0.652 1.610 0.480 2008 0.849 0.676 0.279 -1.445 1.395 -1.027 -1.083 -0.957 -0.369 0.880 1.421 0.383 2009 0.221 -0.548 0.349 0.002 -1.098 -0.757 -2.402 -1.117 0.893 -0.098 -1.251 -1.801 2010 -1.328 -1.444 -0.822 0.057 1.934 -0.473 -0.095 0.150 -1.270 -0.439 -0.237 -1.586