CFSv2 monthly mean SSTs (clim19912020)
 TrgMonth     SST34
   202406     0.16
   202407    -0.18
   202408    -0.89
   202409    -1.04
   202410    -1.22
   202411    -1.49
   202412    -1.40
   202501    -1.20
   202502    -0.87