SVD_SVSAM_INDEX (NCEP1) ** undef = -9.99e+08 year Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 1948 0.913 1.223 1.293 1.283 0.022 2.022 1.083 1.831 2.687 2.509 1.309 1.628 1949 1.164 1.156 1.002 0.931 -0.793 4.446 3.914 5.640 1.321 2.957 2.256 1.425 1950 0.998 0.992 1.067 0.967 0.452 4.802 1.469 4.550 1.762 3.107 1.461 0.743 1951 0.556 0.638 0.688 1.378 0.660 0.159 -0.470 1.864 3.681 3.003 1.691 1.695 1952 1.043 0.823 0.715 1.251 1.722 0.315 -0.879 1.513 1.907 1.195 0.573 0.835 1953 0.604 0.564 0.696 1.427 1.594 0.449 -0.688 3.992 1.630 2.049 1.180 1.048 1954 0.763 0.741 0.819 0.764 1.098 1.843 3.495 2.048 1.060 2.683 1.076 0.632 1955 0.829 0.998 0.478 0.816 1.790 1.210 1.889 2.111 2.993 2.867 1.739 1.287 1956 0.770 1.022 0.797 1.038 1.548 3.565 2.712 1.637 2.260 0.790 0.883 1.435 1957 0.941 0.830 0.434 1.306 1.295 1.202 1.915 3.173 1.408 1.150 0.183 0.825 1958 0.311 0.371 0.610 1.424 1.994 1.686 0.177 2.509 -2.151 1.156 0.959 0.526 1959 0.547 0.568 0.418 0.667 0.440 0.306 2.208 1.854 0.777 1.527 1.970 0.804 1960 0.579 0.605 0.331 1.138 2.283 2.267 1.950 1.363 1.102 1.847 1.995 1.011 1961 0.319 0.705 0.494 0.389 0.686 1.404 1.810 4.109 3.518 2.584 1.840 0.563 1962 0.504 0.886 0.837 0.818 0.930 2.515 3.789 2.538 0.157 0.850 1.499 0.740 1963 0.417 0.497 0.399 0.842 0.408 1.422 0.452 0.160 1.755 1.532 0.911 0.336 1964 0.503 0.442 0.616 0.892 0.769 1.339 -0.067 0.410 -0.286 0.041 0.871 0.679 1965 0.351 0.562 0.466 1.083 1.680 1.593 0.831 1.789 1.218 0.999 0.732 0.672 1966 0.486 0.392 0.481 0.637 1.989 0.578 1.141 3.835 0.504 1.993 1.041 0.714 1967 0.725 0.691 0.586 0.691 1.322 1.548 1.554 2.555 0.745 0.158 1.171 0.882 1968 0.352 0.161 0.467 0.870 1.880 1.108 4.126 3.830 1.985 0.520 0.915 0.941 1969 0.425 0.365 0.359 0.718 0.137 0.034 2.650 3.037 -0.582 1.401 1.030 0.755 1970 0.640 0.536 0.460 0.912 -0.011 0.449 -0.029 3.039 0.317 1.626 1.149 0.574 1971 0.457 0.163 0.316 0.430 1.792 -0.021 0.086 1.579 0.486 1.469 1.041 0.991 1972 0.687 0.615 0.660 1.338 0.887 0.275 0.626 -2.994 0.460 0.234 0.728 0.715 1973 0.485 0.309 -0.008 0.344 2.063 0.504 1.364 3.630 1.292 1.364 1.605 0.358 1974 0.523 0.312 0.334 0.577 1.219 1.050 1.820 -0.511 -1.745 1.339 0.661 0.690 1975 0.138 0.094 0.230 0.277 1.284 0.451 -0.147 1.411 -1.790 -0.542 0.919 0.354 1976 -0.023 0.097 0.316 0.432 0.509 0.774 1.179 1.581 -1.468 -1.189 -0.133 1.070 1977 0.262 0.306 0.432 0.488 -0.131 -1.875 -2.589 -1.985 -2.534 -0.687 -0.008 -0.018 1978 -0.040 -0.094 0.158 -0.089 0.899 -0.913 -2.756 1.146 -1.922 -0.635 0.589 0.073 1979 -0.160 -0.113 -0.335 -0.163 -0.460 2.939 2.816 0.741 -1.213 -1.706 -0.389 -0.018 1980 -0.222 -0.369 0.169 0.211 1.022 -1.872 -1.472 -0.553 3.197 0.037 -0.418 -0.020 1981 -0.344 -0.385 -0.053 0.695 -0.400 -0.416 -1.065 -2.102 2.289 0.715 -0.697 -0.697 1982 0.097 -0.157 -0.665 -1.122 0.533 1.717 2.347 3.084 -2.646 -0.599 -0.879 0.194 1983 -0.107 -0.063 -0.362 -0.298 0.636 0.581 0.808 2.271 1.609 -0.631 -1.230 0.169 1984 0.188 0.014 0.043 0.301 1.123 0.429 -0.747 -1.772 -1.616 -0.463 -0.489 -0.178 1985 -0.087 0.189 -0.030 -0.249 -0.055 -0.690 1.604 1.270 -1.655 0.463 0.095 0.021 1986 0.208 0.229 0.262 0.383 1.340 -1.317 -0.168 -2.075 -2.099 -0.475 0.375 -0.236 1987 -0.001 -0.184 -0.080 0.246 0.225 -0.121 -0.690 2.277 1.465 1.362 0.462 0.179 1988 -0.026 -0.050 -0.016 -0.325 1.076 0.866 0.665 -2.664 0.882 0.275 -0.395 -0.508 1989 -0.155 -0.124 -0.137 0.251 -2.509 1.750 0.608 -0.255 -0.063 0.202 -0.896 -0.400 1990 -0.339 -0.402 -0.343 -0.338 0.565 -0.674 -2.730 0.019 -1.988 0.242 0.075 0.025 1991 -0.024 0.248 -0.431 0.374 -0.154 -1.726 -1.864 -1.205 0.540 -1.016 -0.291 -0.133 1992 -0.415 -0.077 -0.097 -0.050 0.675 -2.698 -0.703 0.289 -1.738 -0.605 -1.270 -0.097 1993 0.307 -0.032 0.391 0.182 -1.080 1.568 2.202 1.805 -1.528 0.576 0.675 0.019 1994 0.310 0.210 0.265 0.691 0.433 -0.512 0.786 2.338 1.139 0.689 0.864 0.079 1995 -0.039 0.092 0.256 -0.374 -0.537 1.010 -0.632 0.067 -1.581 0.088 1.097 -0.507 1996 -0.002 0.151 0.129 0.239 -0.107 1.323 -1.032 -3.760 1.680 -0.042 0.485 0.460 1997 0.051 -0.012 -0.065 0.301 -1.607 -0.454 2.207 0.909 -0.685 1.205 0.637 0.576 1998 0.083 0.244 0.265 -0.507 0.623 1.309 1.045 1.089 0.616 1.210 0.367 -0.039 1999 0.158 0.000 0.175 -0.104 -0.739 0.910 1.216 1.129 1.053 0.709 0.390 -0.236 2000 0.216 0.248 0.257 0.326 -0.581 0.914 -0.226 0.929 2.859 -0.331 0.126 0.688 2001 0.154 0.034 0.036 -0.084 0.354 -0.076 -0.996 1.195 -1.173 -1.209 -0.382 -0.579 2002 -0.177 -0.234 0.278 -0.137 1.735 -1.947 -2.281 -4.295 2.317 -0.598 0.474 -0.148 2003 0.130 -0.086 -0.108 -0.180 -0.609 -0.683 0.982 0.447 0.693 -0.888 0.181 0.354 2004 -0.345 0.156 -0.037 -0.175 -0.111 1.469 -0.293 -0.348 -0.608 -0.095 0.208 0.670 2005 0.156 -0.008 0.068 -0.046 -0.829 -2.534 -1.041 -0.641 0.238 -0.784 0.020 0.323 2006 0.031 0.064 -0.142 -0.032 -2.120 0.688 0.829 -1.149 0.721 0.696 0.453 0.172 2007 0.295 -0.000 0.442 0.493 1.367 -1.801 -3.475 -1.369 -0.072 -0.099 -0.646 -0.678 2008 0.108 -0.036 0.138 0.307 -0.411 0.691 -1.057 0.545 -0.490 1.153 -0.056 -0.050 2009 0.107 0.296 0.043 0.197 -0.219 -1.488 -2.779 -0.598 -0.099 -1.685 -1.230 -0.150 2010 -0.075 -0.227 -0.266 -0.128 -0.796 1.596 0.948 -0.436 -0.544 -1.069 -0.846 -0.432 2011 -0.033 -0.249 0.158 -0.112 -1.331 -0.994 -4.165 -2.848 2.255 -0.257 0.361 -0.479 2012 0.148 0.201 0.091 -0.382 0.000 -0.374 -0.446 -1.185 -0.723 -1.118 -0.227 0.216 2013 -0.410 -0.377 -0.342 -0.576 -0.009 0.088 0.060 -2.058 2.476 -0.407 -0.472 0.233 2014 -0.047 -0.220 -0.353 -0.448 0.938 0.060 -1.027 -1.333 1.768 -0.860 -0.402 -0.177 2015 0.001 -0.140 -0.027 -0.497 -0.088 0.453 0.966 0.977 -1.831 1.454 0.264 -0.095 2016 -0.067 -0.127 -0.293 -0.104 0.260 0.983 -0.840 -2.262 -3.416 -1.029 -0.016 0.241 2017 -0.139 -0.057 0.198 -0.295 -0.772 1.147 1.119 -1.617 -3.321 -0.602 -0.547 -0.181 2018 0.031 -0.047 -0.171 0.240 -0.075 0.132 -0.003 -0.484 -1.397 0.180 0.359 0.288 2019 -0.029 0.109 -0.183 -0.256 0.045 -0.164 -1.918 -2.068 -2.120 -1.168 -0.158 0.174 2020 -0.198 -0.449 -0.373 0.055 0.482 0.524 -1.813 -1.594 0.243 0.513 -0.062 -0.548 2021 0.072 -0.285 0.042 0.100 0.118 1.823 1.218 1.428 -1.560 0.320 0.261 -0.638 2022 -0.117 0.076 0.001 -0.516 -0.105 -1.014 -0.731 -0.460 -1.764 0.624 0.014 -0.135 2023 -0.003 0.341 0.217 0.875 -1.022 -0.662 -0.155 0.175 2.006 -1.354 -0.951 -0.169 2024 0.084 0.198 0.139 -0.917 -0.851 -1.141******************************************