CFSv2 monthly mean SSTs (clim19822010)
 TrgMonth     SST34
   201710    -0.47
   201711    -0.87
   201712    -1.37
   201801    -1.53
   201802    -1.22
   201803    -0.77
   201804    -0.47
   201805    -0.34
   201806    -0.09