> > How long is a ratings period and when will we see real
> world
> > numbers for Stern's two replacements?
> >
>
> An Arbitron ratings period is 12 weeks. The Winter 2006
> survey began Jan. 5 and runs through March 29. The first
> trend of the Winter book (Nov-Dec-Jan) will be released
> March 2. Phase 2 releases March 30 and the Winter book comes
> down May 1. Extrapolations of the trends will show (kind of)
> how the first 4 weeks of the survey are going. "Real world"
> numbers, the weighted kind, will be available with the
> release of the Winter survey on May 1.
>
Thanks for the info, too bad we don't have a way to compare them now instead of waiting.