In the day we placed clusters in the middle of quarter hour quadrents, we never broke for a cluster in the first quadrent of the hour. We placed news so as to end just before our competitor's. Some of us swept music across certain quadrents etc all because of the old arbatron diary.
Now we have PPM so what have you changed about your clock each hour because of PPM? Where are you doing what?
Now we have PPM so what have you changed about your clock each hour because of PPM? Where are you doing what?