"RP" wrote in message
...

The top 15 markets are 93 million, roughly. That's about 38%, not 85%.

You know I've seen that chart from Arbitron too....

Could it be 85% or radio listening is done in Top 15 markets.

That's not true, either. If the top 15 have 38% of the population, about 38%
of radio listening is done in those markets.