Chicago, San Francisco, San Diego & Charlotte-Gastonia-Rock Hill PPM get MRC Accreditation.

Arbitron Inc. announced that the Media Rating Council Inc. (MRC) has accredited the radio average-quarter-hour monthly ratings data produced by the Portable People MeterTM (PPM) ratings service in four additional markets: Chicago, San Francisco, San Diego and Charlotte-Gastonia-Rock Hill.

The MRC has also voted to continue accreditation in fourteen markets–Atlanta, Baltimore, Cincinnati, Houston, Kansas City, Los Angeles, Milwaukee-Racine, Minneapolis-St. Paul, Philadelphia, Phoenix, Riverside-San Bernardino, San Antonio, St. Louis, and Tampa-St. Petersburg-Clearwater.

In total, 18 markets now display the MRC double checkmark logo for the radio average-quarter-hour monthly ratings data produced by the Portable People Meter radio ratings service.

The MRC voted to not grant accreditation at this time in the remaining 30 PPM markets, and therefore PPM data in those markets continue to be unaccredited.

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