CFSv2 monthly mean SSTs (clim19912020)
 TrgMonth     SST34
   202403     0.83
   202404     0.43
   202405    -0.28
   202406    -0.87
   202407    -1.43
   202408    -1.62
   202409    -1.92
   202410    -2.26
   202411    -2.39