DSET ^cmorph.spi.12.mo.bin
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UNDEF  -9999.
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TITLE  SPI at 12-mo time scale
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xdef 720 linear -179.7500000 0.5000000 
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ydef 240  linear  -59.750000 0.5000000                                        
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ZDEF   1 LINEAR  1 1 
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TDEF 1 LINEAR Apr2024 1mo
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VARS 1
p 1 00 spi
ENDVARS