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Table 3

SPI and SDI correlation coefficient in seasonal time scales

SVD
PCA
SPI FallSPI WinterSPI SpringSPI SummerSPI FallSPI WinterSPI SpringSPI Summer
SDI Fall 0.690 0.207 0.053 0.023 0.677 0.224 0.049 0.006 
SDI Winter 0.324 0.650 0.168 0.090 0.312 0.632 0.161 0.051 
SDI Spring 0.122 0.648 0.755 0.103 0.118 0.645 0.748 0.105 
SDI Summer 0.172 0.617 0.575 0.020 0.166 0.609 0.568 0.090 
  AverageICA
SDI Fall 0.609 0.259 0.094 0.026 0.367 0.005 0.077 0.028 
SDI Winter 0.326 0.483 0.294 0.053 0.234 0.244 0.151 0.076 
SDI Spring 0.011 0.564 0.554 0.078 0.028 0.291 0.607 0.066 
SDI Summer 0.079 0.561 0.474 0.055 0.039 0.360 0.471 0.061 
SVD
PCA
SPI FallSPI WinterSPI SpringSPI SummerSPI FallSPI WinterSPI SpringSPI Summer
SDI Fall 0.690 0.207 0.053 0.023 0.677 0.224 0.049 0.006 
SDI Winter 0.324 0.650 0.168 0.090 0.312 0.632 0.161 0.051 
SDI Spring 0.122 0.648 0.755 0.103 0.118 0.645 0.748 0.105 
SDI Summer 0.172 0.617 0.575 0.020 0.166 0.609 0.568 0.090 
  AverageICA
SDI Fall 0.609 0.259 0.094 0.026 0.367 0.005 0.077 0.028 
SDI Winter 0.326 0.483 0.294 0.053 0.234 0.244 0.151 0.076 
SDI Spring 0.011 0.564 0.554 0.078 0.028 0.291 0.607 0.066 
SDI Summer 0.079 0.561 0.474 0.055 0.039 0.360 0.471 0.061 
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