What does the term "TSL" refer to in the context of radio?

The term "TSL" in the context of radio refers to "Time Spent Listening." This metric is crucial in the broadcasting industry as it measures the average amount of time that an audience listens to a particular radio station or program. Understanding TSL is important for radio stations and advertisers alike because it provides insights into listener engagement and loyalty. A higher TSL indicates that listeners are more engaged and likely to return, which can foster stronger relationships with audiences and increase advertising effectiveness.

In contrast, the other terms do not accurately describe this metric or its implications in radio broadcasting. Total Station Listening, Targeted Schedule Length, and Total Show Length do not reflect the concept of listener engagement in the same way, which reinforces why "Time Spent Listening" is the correct understanding of TSL in this context.