CBS has been running 48 Hours on Saturday nights for years. Every once in awhile ABC will run 20/20 Saturday as competition. Will it be a success for the network? Stay tuned.

The ratings are typically the best indication of a show’s likelihood of staying on the air. The higher the ratings (particularly the 18-49 demo), the better the chances for survival. This chart will be updated as new ratings data becomes available — typically around 11:30am EST/8:30am PST. Refresh to see the latest.

5/22 update: You can see the latest night’s ratings in context.

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

Note: These are the final national numbers (unless noted with an “*”). These are different from the fast affiliate numbers which are just estimates of the actual ratings. The final nationals are typically released within 24 hours of the programming or, in the case of weekends and holidays, a couple days later.

What do you think? Do you like the 20/20 Saturday TV series? Do you think it should be cancelled or renewed for another season?