Hard to come by.
One of the manuals for the Ford '98 Explorer at
www.fordcds.com had a bunch of mode 22 PIDS, explanations, and scaling. The Ford Worldwide PIDS are listed in other vehicles then and since then, but only the Explorer for that year gave the scaling for some reason. Don't know about the status of that website though, it was down the last time I checked.
Lukeyson