That figure includes the two major FM simulcasts since those both chose the AM to be the "master" station.They were #1 in San Francisco up until the PPM era in, what was it, the year 2008? They were still ranked pretty high in 2011 and whatever listeners they had they mostly lost based on their ill-advised format changes. Also, David said that AM listenership is 15% in San Francisco, higher than most other metropolitan areas. I don’t think that figure takes into account FM simulcasts, but I could be wrong since it was David that mentioned the 15% number.
So the real AM number is about 8% to 9%, which is still much higher than the AM share in other major CA markets. But it is mostly over 55, so when you look at the sales demos, the AM share is well under 5%.