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
   201509     1.97
   201510     2.21
   201511     2.37
   201512     2.24
   201601     1.89
   201602     1.51
   201603     1.23
   201604     0.91
   201605     0.57
   201606     0.24