CFSv2 Seasonal SSTs (clim19822010)
first  rec: avg(lastbs-1, lastobs, CFSv2 month 1)
second rec: avg(lastbs, cfs month 1, CFSv2 month 2)
last   rec: CFSv2 month 9
other  rec: CFSv2 3-mo average
 TrgSeason    SST34
   201405     0.49
   201406     0.49
   201407     0.49
   201408     0.58
   201409     0.79
   201410     0.97
   201411     1.07
   201412     1.02
   201501     0.92
   201502     0.81