AQH share

AQH share is a statistic that measures broadcast radio listenership.

Definition

is an abbreviation for average quarter-hour persons, defined by Arbitron as the average number of persons listening to a particular station for at least five minutes during a 15-minute period.
is the percentage of those listening to radio in an Arbitron "market" who are listening to a particular radio station.
Thus, for a given station is mathematically expressed as:

Usage

AQH Share is most often used in conjunction with TSL to measure listenership in a market. While AQH measures the average number of listeners to the station, TSL tracks the length of time listeners are tuned continuously to the station.