The size of the viewing audience. Here’s the list for the us https://en.m.wikipedia.org/wiki/List_of_United_States_television_markets https://en.m.wikipedia.or

The size of the viewing audience. Here’s the list for the us https://en.m.wikipedia.org/wiki/List_of_United_States_television_markets https://en.m.wikipedia.org/wiki/List_of_United_States_televi...