CFSv2 monthly mean SSTs (clim19912020)
 TrgMonth     SST34
   202507     0.09
   202508    -0.12
   202509    -0.46
   202510    -0.51
   202511    -0.58
   202512    -0.54
   202601    -0.36
   202602    -0.15
   202603    -0.00