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
   201403    -0.03
   201404     0.36
   201405     0.79
   201406     1.09
   201407     1.26
   201408     1.32
   201409     1.45
   201410     1.69
   201411     1.76
   201412     1.59