In EFILive, they have a commanded AFR field and a MAF lbs/min. Which would show a more accurate air fuel ratio to tell if someone is running rich or lean? Here is the table. I really don't know much about MAF lbs/min compared to how rich or lean someone is running but would like to learn.
http://lknopf.servehttp.com/yellow ta.csv
http://lknopf.servehttp.com/yellow ta.csv