CFSv2 monthly mean SSTs (clim19912020)
 TrgMonth     SST34
   202407    -0.21
   202408    -0.75
   202409    -0.98
   202410    -1.06
   202411    -1.21
   202412    -1.18
   202501    -1.00
   202502    -0.70
   202503    -0.37