The graph shows the federal funds future expiring october 2015. This shows the market expects no rate hike this meeting.
You can also look up the implied probability on the groups website, just google fed watch
if you want to see another month: look up name of future contract on website, e.g. december is called FFZ2015
Source: https://www.youtube.com/watch?v=780Qawc3fAE (at minute 20)