Prime Time Preliminary Tuesday Ratings

Fox's "Fringe" debuts to solid numbers, but Sunday's premiere of "Hole in the Wall" still holds on to the top spot as the No. 1 debut of the fall so far. "90210" took a big hit week-to-week, dipping 35%.

	8	9	9:30	10
2.7 / 7	Wipeout 2.8 / 8 7.2 mil	Wipeout 3.0 / 8 7 mil		Primetime: Medical Mysteries 2.2 / 6 6.9 mil
2.1 / 6	Big Brother 10 2.6 / 7 7 mil	Fashion Rocks! 1.9 / 5 5.1 mil
2.9 / 8	Fringe 3.2/ 9 9 mil		Hole in the Wall 2.1/ 5 5.1 mil	No Programming
2.4 / 6	America's Got Talent 2.6 / 7 11.6 mil			Law & Order: SVU 1.9 / 5 7.7 mil
1.5 / 4	90210 1.7 / 5 3.3 mil	Privileged 1.3 / 3 2.9 mil		No Programming

Source: Nielsen Media Research

*Ratings are specified in the 18-to 49-year-old demographic and viewership in P2+.

A note about ratings: Ratings are expressed as percentages of Nielsen's estimated 112.8 million U.S. television households. The first number, the rating, is a percentage of households tuned into a specific program at a specific time.

The second number, the share, is a percentage of households with televisions in use tuned into that same program. For example, if a show obtains a 10.2/16, this means that 10.2% of all U.S. households tuned into the program at some point during the broadcast. Meanwhile, 16% of all households watching television during the time period viewed the program at some point. Ratings are broken down further by demographic, as networks sell advertising time based on the makeup of the audience.