CME Volume/ a question for DT

Question for DT

The enclosed images shows a different total volume for the SP Emini on March 8, 2012 than what you have on this site

I believe your numbers are the correct one but it puzzles me why would the CME group give us different numbers? Or maybe I’m on the wrong page?

And if so will you please show me step by step how you reach this page from the CME that you use

Thanks



Ps I hate the CME site I could never find the information I need and always I get lost there…