by Calculated Risk on 9/23/2013 08:30:00 AM
Monday, September 23, 2013
Chicago Fed: "Economic Growth Picked Up in August"
The Chicago Fed released the national activity index (a composite index of other indicators): Economic Growth Picked Up in August
The Chicago Fed National Activity Index (CFNAI) increased to +0.14 in August from –0.43 in July.This graph shows the Chicago Fed National Activity Index (three month moving average) since 1967.
The index’s three-month moving average, CFNAI-MA3, increased to –0.18 in August from –0.24 in July, marking its sixth consecutive reading below zero. August’s CFNAI-MA3 suggests that growth in national economic activity was below its historical trend. The economic growth reflected in this level of the CFNAI-MA3 suggests subdued inflationary pressure from economic activity over the coming year.
emphasis added

This suggests economic activity was below the historical trend in August (using the three-month average).
According to the Chicago Fed:
What is the National Activity Index? The index is a weighted average of 85 indicators of national economic activity drawn from four broad categories of data: 1) production and income; 2) employment, unemployment, and hours; 3) personal consumption and housing; and 4) sales, orders, and inventories.
A zero value for the index indicates that the national economy is expanding at its historical trend rate of growth; negative values indicate below-average growth; and positive values indicate above-average growth.