SVNAM_INDEX (NCEP1) ** undef = -9.99e+08 year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1948 0.886 0.701 1.470 1.657 -0.968 0.322 -0.050 0.376 0.445 0.241 0.423 1.440 1949 1.908 0.900 -0.683 2.568 0.234 0.057 0.212 0.338 0.017 0.278 -1.759 -0.478 1950 -0.288 0.620 -0.484 0.324 0.622 -0.290 -1.151 -1.228 -0.629 -0.243 -0.393 -0.904 1951 1.019 0.839 -1.342 -0.502 -0.847 -0.160 -0.244 0.559 0.730 0.156 0.760 1.447 1952 0.408 -0.991 -1.078 0.348 -1.017 0.109 1.556 0.408 0.519 -0.127 -1.563 -0.654 1953 -0.213 0.007 1.559 -1.436 -1.593 1.283 0.447 0.338 0.132 0.044 -0.256 0.814 1954 0.249 0.769 0.566 -0.654 -2.501 -0.069 0.371 -0.071 -0.040 -0.007 -0.156 0.290 1955 0.186 -0.403 -1.191 -0.113 0.590 -0.051 0.022 0.701 0.094 0.630 -0.137 0.307 1956 -0.364 -1.350 0.333 -1.089 1.444 0.503 -0.600 -1.440 -1.134 1.398 -0.673 -0.848 1957 0.905 -1.399 -1.537 -0.325 -1.621 -0.307 -0.583 -0.444 -0.217 0.553 -0.480 1.579 1958 -0.325 -1.424 -1.835 -0.111 0.043 -0.582 -1.453 -0.991 -1.334 0.601 0.309 -1.060 1959 -1.291 1.461 0.822 -0.491 -0.555 -0.520 -0.293 -0.436 -0.754 -0.539 -2.182 0.341 1960 -1.357 -0.855 -1.189 -0.556 -1.673 -0.469 -1.398 -1.074 -0.365 0.440 -0.538 -0.644 1961 -0.714 0.680 0.399 -0.670 0.190 -0.523 -0.750 -1.176 -0.683 -0.190 0.817 -0.507 1962 1.094 0.054 -1.974 1.300 0.752 -0.975 -1.027 -1.392 -1.135 0.745 -0.872 0.204 1963 -0.808 -0.576 0.737 -0.153 0.554 -1.586 -0.631 -0.900 -1.173 1.166 0.008 -0.423 1964 1.298 -0.081 0.523 1.126 2.034 -1.628 -0.724 -1.383 -1.056 0.408 0.061 -0.019 1965 -0.000 -1.081 -0.321 0.615 0.815 -2.017 -1.829 -2.184 -0.880 1.583 -1.912 0.585 1966 -0.356 -0.269 -0.299 -1.550 1.927 -1.438 -0.828 -0.919 -1.222 0.753 0.573 -1.378 1967 0.660 1.308 1.074 2.124 0.171 -0.635 -0.064 -0.879 -1.069 1.481 0.632 -0.180 1968 -0.366 -1.058 1.229 0.784 0.238 -1.729 -1.228 -1.377 -0.759 0.632 -0.797 -0.283 1969 -1.670 -1.453 -0.224 0.555 -0.468 -1.490 -0.455 -0.073 -1.130 0.038 0.413 -1.390 1970 -1.495 -0.842 -1.858 0.834 0.768 -0.840 -0.771 -0.446 -0.661 0.253 0.526 0.032 1971 0.661 -0.941 -1.084 -0.551 1.136 -0.740 -1.019 -1.023 -0.353 2.014 1.459 0.798 1972 0.265 0.196 0.123 1.141 0.239 -0.910 -0.554 -0.878 -0.993 0.846 -0.183 0.734 1973 1.151 0.833 0.557 -1.433 0.459 -0.691 -0.787 -0.187 -1.328 0.880 -0.446 0.509 1974 -0.403 0.058 -0.825 -0.018 -0.301 -1.615 -1.193 -1.193 -1.489 -0.432 0.272 0.841 1975 1.615 -0.279 0.110 -0.150 -0.228 -0.103 -0.818 -0.749 -0.559 0.983 1.280 1.821 1976 0.539 1.313 -0.080 0.720 0.148 -1.090 -2.034 -1.117 -1.381 0.293 0.037 -1.155 1977 -2.930 -0.993 0.657 1.411 -0.325 -0.022 -0.744 -1.360 -0.524 0.729 0.116 0.019 1978 0.391 -1.336 0.024 -1.207 -0.084 -0.933 -0.659 -1.086 -1.391 1.316 2.378 -0.185 1979 -0.539 0.703 -0.679 -0.972 0.091 0.037 -0.102 -0.847 -0.407 -0.282 0.872 1.521 1980 -1.165 -0.913 -1.189 -0.383 -1.301 0.039 -0.372 0.186 -0.514 -0.630 0.148 0.144 1981 0.280 0.010 -1.305 0.435 0.366 0.039 0.718 0.669 -0.299 -2.019 -0.678 -0.203 1982 0.082 0.009 0.370 1.596 0.178 -0.673 -0.467 -0.460 -0.366 0.091 0.452 1.038 1983 1.143 -0.509 -0.730 -0.504 -0.268 -0.627 -0.216 0.576 -0.154 1.196 0.398 -0.009 1984 0.603 -0.038 -1.243 -0.030 0.519 0.213 0.041 -0.087 -1.059 -0.912 -0.529 0.431 1985 -1.626 -1.108 0.682 0.760 -0.329 -0.742 -1.157 -0.332 -0.125 0.922 -1.581 -1.783 1986 0.201 -1.314 1.630 0.837 0.106 -0.570 -0.095 -0.703 -0.292 1.242 0.160 0.744 1987 0.212 -0.408 -0.879 -0.029 0.548 -0.052 -0.707 -0.337 -0.583 -0.307 -0.079 -0.069 1988 0.580 -0.633 -0.259 0.641 -1.767 0.508 0.337 0.159 0.434 0.767 0.433 1.289 1989 2.671 1.873 0.815 -0.835 0.790 0.502 1.288 -0.333 0.179 0.781 0.645 -0.362 1990 0.506 2.367 2.235 1.929 1.332 -0.059 0.140 -0.054 -0.157 1.340 1.554 1.508 1991 0.255 -0.272 -0.330 1.247 0.109 0.760 -0.179 0.316 0.068 0.369 0.543 1.739 1992 1.055 0.678 0.286 -0.885 2.690 -1.179 -1.486 -1.354 -0.529 1.020 0.602 1.374 1993 2.594 0.543 1.250 -0.507 -1.927 -0.815 -0.440 -0.347 -1.290 0.548 0.983 0.598 1994 -0.232 -0.560 1.368 -0.758 0.280 -0.636 0.135 0.010 0.407 0.826 1.935 0.941 1995 0.110 0.519 0.575 -2.399 -1.161 0.122 -0.902 -0.006 -0.216 0.774 -0.961 -0.361 1996 -0.342 0.761 -0.949 -2.059 0.177 -0.188 0.399 -0.191 -0.950 0.243 -1.156 -0.884 1997 0.720 1.680 0.137 0.972 -1.019 -0.381 -0.587 0.048 -0.219 -0.512 0.006 0.673 1998 -1.137 1.270 0.053 -0.490 0.865 1.985 0.954 1.141 0.344 -0.065 -2.283 0.532 1999 0.425 0.545 -1.481 0.013 -0.309 -0.155 0.523 -0.586 -0.039 -0.081 0.481 0.870 2000 1.000 0.582 -0.360 -0.182 1.048 -0.100 0.254 0.630 -0.185 -0.111 -1.668 -1.782 2001 -0.088 -0.441 -0.975 1.332 0.675 0.095 0.336 0.629 0.093 0.411 1.099 -1.079 2002 0.772 1.779 -0.291 1.266 -0.410 -0.362 0.898 0.353 0.403 -2.061 -1.919 -1.077 2003 0.041 -0.028 0.391 -0.085 0.632 -0.106 0.682 1.032 0.826 -1.311 -0.175 0.848 2004 -1.202 -0.790 0.092 -1.378 -0.852 0.613 -0.238 -0.305 0.750 -0.200 1.306 1.029 2005 -0.133 -0.882 -0.920 -0.331 -1.587 0.412 0.760 0.710 0.895 -0.127 -0.768 -1.828 2006 -0.387 -0.517 -1.505 -0.456 -0.359 1.553 0.730 0.883 1.013 -1.074 -0.652 1.285 2007 1.239 -0.842 0.600 -0.064 0.963 0.994 -0.247 0.852 1.035 -0.321 -0.320 0.041 2008 0.740 0.883 0.393 -0.460 -1.607 0.419 0.260 -0.158 0.544 1.115 0.104 0.063 2009 0.228 -0.516 -0.066 1.133 0.543 0.308 -0.837 -0.171 0.835 -1.487 0.050 -2.686 2010 -0.993 -2.804 -0.605 -1.185 -2.531 0.922 1.898 1.675 0.914 -0.872 -0.051 -1.854 2011 -1.079 1.019 0.879 1.388 -0.936 0.940 0.645 0.171 0.030 0.568 0.779 1.452 2012 -0.480 -0.547 0.198 -0.684 -0.272 1.758 1.301 0.704 1.476 -1.854 -0.936 -1.333 2013 -0.762 -0.387 -1.844 -0.072 0.595 1.251 1.072 0.608 0.745 0.136 2.267 0.284 2014 -0.648 -1.056 0.256 1.470 0.258 1.167 0.694 0.562 0.040 -1.335 -0.746 0.159 2015 0.693 1.004 1.312 -0.040 0.203 1.150 -0.140 0.983 1.440 -0.610 1.098 1.264 2016 -1.559 -0.229 -0.451 -2.145 -1.082 1.763 1.630 2.624 1.569 -2.876 -1.304 0.619 2017 0.514 -0.069 0.607 -0.151 -0.312 -0.268 0.646 1.201 1.190 -0.956 -0.769 -0.932 2018 -0.658 -0.436 0.001 -0.319 1.170 1.023 2.718 1.172 1.459 -0.813 -1.158 -0.163 2019 0.063 0.265 1.020 -0.565 -2.327 2.032 0.400 1.123 1.115 -0.976 -0.537 0.094 2020 1.461 2.328 2.920 0.734 -1.164 1.404 0.896 0.199 1.659 -1.783 1.044 -0.774 2021 -1.228 -0.716 1.774 0.293 -0.508 1.433 2.253 1.862 1.100 -0.880 0.434 0.052 2022 0.219 1.022 -0.316 -1.063 0.726 1.239 1.542 1.962 1.822 -0.183 -0.644 -1.806 2023 -0.130 1.128 0.473 -1.301 1.402 1.139 1.341 2.095 2.404 -0.828 -0.404 0.014 2024 0.021 0.334 -0.508 0.567 -0.082 1.627 1.944 1.964 2.836 -0.885 -0.027 -0.281 2025 0.101 -1.532 0.006 0.032 0.174*************************************************