CFSv2 monthly mean SSTs (clim19912020)
 TrgMonth     SST34
   202506     0.07
   202507    -0.03
   202508    -0.37
   202509    -0.32
   202510    -0.45
   202511    -0.57
   202512    -0.50
   202601    -0.38
   202602    -0.17