CFSv2 monthly mean SSTs (clim19822010)
 TrgMonth     SST34
   201708     0.05
   201709    -0.14
   201710    -0.28
   201711    -0.39
   201712    -0.66
   201801    -0.80
   201802    -0.53
   201803    -0.12
   201804     0.21