CFSv2 monthly mean SSTs (clim19822010)
 TrgMonth     SST34
   201804    -0.34
   201805    -0.26
   201806     0.03
   201807     0.10
   201808    -0.01
   201809     0.02
   201810     0.29
   201811     0.40
   201812     0.23