CFS PDFC Seasonal SSTs
1st rec: avg(lastbs-1, lastobs, cfs month 1)
2nd rec: avg(lastbs, cfs month 1, cfs month 2)
other records: CFS 3-mo average
 TrgSeason    SST34
   201202   -.621922
   201203   -.519252
   201204   -.452057
   201205   -.208344
   201206   -.009613
   201207    .162506
   201208    .172241
   201209    .176697
   201210    .136169