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
   201210    .306640
   201211    .103703
   201212   -.052643
   201301   -.172272
   201302   -.134583
   201303   -.146088
   201304   -.146576
   201305   -.101471
   201306   -.094330