Arbitron has released new data from the PPM results for Philadelphia, showing the total cume numbers for April and May. Arbitron SVP of Press and Interior Relations Thom Mocarsky says, "In a PPM world, individual station Cumes are larger for all stations, since every exposure to an encoded station is automatically recorded and reported."

Mocarsky also notes that even with the PPM, P1 listeners are still incredibly important and drive ratings. "Some have suggested that P1 can be seen as a measure of 'loyalty' or 'engagement.' In the case of the Philadelphia May data, you see that eight stations garner more than two-thirds of their AQH audience from P1 listeners with Contemporary Inspirational WPPZ-FM at the top of the ranker at 79 percent."

He added, "The new PPM metric that replaces time spent listening – Average Weekly Time Exposed – also says a lot about the “loyalty” and “engagement” of P1 listeners. In the May 2007 Philadelphia PPM data, two stations, Smooth Jazz WJJZ-FM and Urban Adult Contemporary WDAS-FM have a time spent exposed among their P1 listeners at ten hours or greater."

The PPM data shows that cume numbers don't always match up with ratings shares. Nine stations have a cume over a million listeners, with top-rated WBEB (B101) bringing in a cume over two million. While Oldies WOGL is the second-highest cume station, it is the fourth-best rated station.

Going by AQH shares, the top ten stations remain fairly stable: WBEB, News KYW, Rock WMMR, WOGL, WDAS, Classic Rock WMGK, Country WXTU, Talk WPHT, Classic Hits WBEN and Top 40 WIOQ.