The average TV audience share refers to the percentage of viewers who are tuned in to a particular television program or channel at a given time. It is a measure of the popularity and reach of a show, calculated by dividing the total number of viewers by the total number of households with televisions. This metric is commonly used in the television industry to gauge the success and impact of a program, as well as to determine advertising rates. A high average TV audience share indicates a large and engaged audience, while a low share may suggest a lack of interest or competition from other programs.