From Zap2it.com

The WB said farewell to Jessica Biel as the Camdens sent Mary off to live with her grandparents on " 7th Heaven" at 8 p.m., pulling a 8.5/11 (6.5/12) and was second in its timeslot for the night. The skins came to " Roswell" to search for Max, Michael, Isabel and Tess at 9 p.m., helping the show increase from last week to a 4.5/6 (4.3/6).

Here's my breakdown of the ratings for the show..

First-"7th Heaven" ratings.
It got a 7.8 rating /11 share from 8-8:30 (last week, 7.0/10) and a 9.1 rating /13 share from 8:30-9:00 (7.8/11) for an average of 8.5 rating /12 share for its hour from 8:00-9:00 p.m. (7.4/11).

It came in second in its timeslot from 8-9 p.m.

From 8-8:30: The show came in second behind "King of Queens"

From 8:30-9:00: The show was first in its timeslot.

Now for "Roswell"--

The humans were wiped leading the show to a 4.5 rating /6 share from 8:00-8:30 (last week, 4.4/6) and slipped slightly to a 4.4 rating /6 share from 8:30-9:00 p.m. (4.1/6) for an average of a 4.5 rating /6 share for its 9:00-10:00 p.m. timeslot.

"Roswell" was fifth in its timeslot for the night from 9-9:30 and 9:30-10:00 p.m.

The average for the night for The WB was 6.5/9 (5.9/8)