Hi Rick,
One thing I've found so far is the size of the AQI images. Yours are 90 wide by 100 tall. Scott's are 80 wide by 89 tall.
I'm thinking it is in the ajax-dashboard6.php file itself. It may or may not be a css issue at all. Check the width of the tables and width of the columns.
I'm not sure that helps or not.
John