Real GDP not matching in 2 tables ?

Question

In 1st table , GDP in 2007 = 11523.9

http://www.bea.gov/national/nipaweb/TableView.asp?SelectedTable=6&ViewSeries=NO&Java=no&Request3Place=N&3Place=N&FromView=YES&Freq=Year&FirstYear=2004&LastYear=2007&3Place=N&Update=Update&JavaBox=no#Mid

But in 2nd table GDP in 2007, IV = 11620.7, this is number for the sum of 4 quarters, as I understanding.

http://www.bea.gov/national/nipaweb/TableView.asp?SelectedTable=6&Freq=Qtr&FirstYear=2006&LastYear=2008

Anything I misunderstanding?

Answer 1

The answer is hidden in tables names - first one is seasonally adjusted but second is not. It means seasonal fluctuations between quarters were flattened, thus leading to such differences, so this volatility is just due to different methodology/approaches used in calculations.