Only three FOX shows were up week-to-week this time around. Despite a slight increase, Kitchen Nightmares is now at the bottom of the reality show rankings, tied with Saturday night’s Cops and America’s Most Wanted. Could this be the first of Gordon Ramsey’s FOX series to be cancelled? American Dad was the only animated show to get a bump and it was a significant one. Traffic Light saw a huge increase as well but sadly, its numbers are still terrible and it’s sure to be cancelled.

Which FOX TV shows will be cancelled or renewed depends mostly on the series’ ratings, particularly the 18-49 demographic. Before we get to the season-to-date averages, here are the winners and losers from April 15th through April 21st — based on the coveted demo, as measured against the last original episode.

Week-to-Week Gains: Kitchen Nightmares 1.6/6 (+6.7%), American Dad 2.2/6 (+37.5%), and Traffic Light 1.3/3 (+44.4%).

No Change: Fringe 1.4/4, House 3.2/9, and The Chicago Code 1.8/5.

Week-to-Week Losses: Family Guy 3.0/8 (-9.1%), The Cleveland Show 2.3/6 (-4.2%), Glee 3.8/11 (-9.5%), Raising Hope 2.1/5 (-4.5%), American Idol 7.1/20 (Weds, -2.7%), Breaking In 2.5/6 (-3.8%), American Idol 5.8/19 (-9.4%), and Bones 3.2/9 (-8.6%).

Below is a list of the regular FOX TV shows and their 2010-11 season average ratings to date. It only incorporates the ratings for original episodes and not repeats. The data is sorted by the all-important 18-49 demographic averages. The closer a show is to the bottom, the more likely it is to be cancelled. Fridays and Saturdays are the least-watched nights of TV so those shows get lower numbers.

Raw data: © The Nielsen Company via Media Week.

Wonder if your favorite FOX show’s been renewed or cancelled? Check out our comprehensive list. We’ll keep updating it as new info becomes available.

What do you think? Any surprises on the lists? Which shows do you think won’t survive to see a new season?

Image courtesy FOX.