Federal Funds Rate & Summer predictions of growth graphic

I found a graphic that gives a prediction for real GDP growth percentages in summer 2010 with a direct comparison to the federal funds rate in recent history. The article explains that the changes in federal funds interest rates provide one of the eleven factors used to create predictions. However, changes in interest rates come with a delay of about fifteen months before any changes in the economy are noticed. Unfortunatly growth over the summer is predicted to slow from that of the early months of 2010.