"Telamon" wrote in message
...
San Diego is one of the markets where listening location vs. signal
strength has been analyzed, going back to 1998 and covering 39 survey
periods and nearly 100,000 listener diaries.

You are full of it Eduardo. I don't care where you get your data from
it's either wrong, you have misinterpreted it or made incorrect
extrapolations. In any event you don't know up from down.

The listening data is from over 100,000 Arbitron diaries over the last 10
years. listening locations taken from Arbiton's Maximiser and plotted on
MapMaker, another Arbitron application. Then, contours of stations are laid
over the maps, using one of the engineering applications to create multiple
contours.

The data is accurate... it is the Arbitron ratings. There is no
interpretation... just a view of where listening takes place either for home
or work listening... and a determination of where it occurs vs. signal
strength.

Several broadcasters have done this, as well as Arbitron itself to determine
how to do ascription which in many cases is totally signal based.