Look at slide 5 under CWID Objective 6 You must have powerpoint installed to view this presentation. <A HREF="http://www.les.disa.mil/public/CWID2007/CWID-Trials-Quad-Charts-by-Objectives.ppt" target="_blank">http://www.les.disa.mil/public/CWID2007/CWID-Trials-Quad-Charts-by-Objectives.ppt</A>