Ill take a shot. Smarter people than me on this for sure. What you see on PBS is the people on property that are ahead of you, the list (adjusted 4-13 for people that dropped of since 2010 snapshot) shows all who could be ahead of you if everyone came back (assuming u have furloughees or LOAs etc) ahead. Your current number and isl will probably never be same as so many variables jockey the number around.