|The Big Bang Theory||-38%||Mon 9:30||-17%||Survivor|
|Rules of Engagement||-14%||Mon 8:30||-39%||Survivor|
|The Office (R)||n/a||-40%||Parks & Recreation|
|Parks & Recreation||+20%||Thu 8:30||-4%||30 Rock|
|Parks & Recreation||+0%||Thu 8:30||+25%||The Marriage Ref|
|Outsourced||n/a||-6%||The Marriage Ref|
|American Idol Th||+7%||Wed 9:00||+150%||Bones|
|The Vampire Diaries||-18%||-18%|
HOW TO READ THIS: These are adults 18-49 rating comparisons between the date in the post title and the corresponding night in May sweeps of 2010. The "SHOW" column compares each show with how that same show did during the third week of May sweeps 2010, no matter where it aired in 2010. (If it aired somewhere else, I tell you when in the "day/time" column.) The "SLOT" column compares each timeslot's rating with the timeslot's rating on the corresponding night in 2010, no matter what aired there last year. (If it's different, I tell you what it is in "previous occupant.")
Stats in blue are less accurate due to lack of access to half-hour breakdowns.
Previous posts on corresponding evening: 2009 | 2010
Full table for 5/12/11 forthcoming.