Read this post for details on interpreting the numbers posted.
In brief, the first column is the unique number of individuals who sampled a program for 1 minutes or more on linear viewing (15 minutes on-line). The next number is the national average for the program.
So for example almost 700k sampled The Gladiator final while the average across the broadcast was 282k. with 9k watching on 10Play - all nationally.