Some of NBC‘s shows have done well while others have really struggled. Which will be cancelled and which will be renewed? Stay tuned!

NBC shows this season (so far): About a Boy, America’s Got Talent, American Dream Builders, American Ninja Warrior, Believe, The Biggest Loser, The Blacklist, Chicago PD, Chicago Fire, Community, Crisis, Crossbones, Dateline, Dateline Saturday Night Mystery, Food Fighters, Grimm, Growing Up Fisher, Hannibal, Hollywood Game Night, Ironside, Last Comic Standing, Law & Order: Special Victims Unit, The Michael J. Fox Show, The Night Shift, Parenthood, Parks and Recreation, Revolution, Running Wild with Bear Grylls, Sean Saves the World, The Sing-Off, Taxi Brooklyn, Undateable, The Voice, Welcome to the Family, Welcome to Sweden, and Working the Engels.

NOTE: You can see the ratings for NBC’s 2014-15 season here.

There’s lots of data that NBC looks at when deciding whether to renew or cancel a TV series but the ratings are typically the biggest piece.

Check other networks’ rankings:
ABC | CBS | The CW | FOX | ABC Family | TNT

Note: If you’re not seeing the updated charts, please try reloading the page. You can also see them here and here.

A couple of notes about these charts:
These figures are updated automatically as new ratings are released. The averages are based on the final national numbers (live plus same day viewing), unless marked with an asterisk (*). For technical reasons, I have to resort them manually so feel free to let me know if I missed something.

Keep in mind that the demo numbers are typically what’s most important to advertisers. Therefore, that’s how the networks measure success. Advertisers pay more for ad time on a show that has a higher demo rating. Because older viewers don’t count? No, it’s because younger viewers watch less traditional TV and are harder to reach.

Demo numbers are typically reported using the 10ths decimal place (2.4, for example). In the averages, I’m using an extra decimal for easier ranking.

The networks take into account when shows air on Fridays and Saturdays, nights when TV viewership is lower.

What do you think? Which shows are you rooting for? Which one isn’t as big a hit as you thought? Are you hoping any series will get cancelled to make way for something else?