TV audience share refers to the percentage of viewers who are watching a particular television program or channel at a given time. It is a measure of the popularity and reach of a TV show, and is often used by networks and advertisers to determine the success of a program. A higher audience share indicates a larger number of people tuning in to watch a show, while a lower share suggests that the program may not be as widely viewed. This metric is important in the television industry as it helps to gauge the overall viewership and impact of a show, and can influence decisions on programming and advertising strategies.