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
   201311    -0.01
   201312    -0.04
   201401    -0.18
   201402    -0.21
   201403    -0.10
   201404     0.07
   201405     0.23
   201406     0.37
   201407     0.53
   201408     0.67