Dharry - You're only half right. Yes radio stations have the same number of listeners as they had before. Your analogy between KM and miles is not accurate though. KM can be accurately converted to miles. PPM to diary not so much. PPM is measuring exactly what the person carrying the device is actually exposed to, while diary measured what the listener thought they listened to. Your analogy would be more accurately stated as it's the difference in measuring driving distance by your odometer (PPM) or by how far you thought you drove (diary).
The big problem is the number of meters in in the marketplace. Indy is scheduled to have 1,000 meters per book. That's one meterper 1,660-ish people.
The big problem is the number of meters in in the marketplace. Indy is scheduled to have 1,000 meters per book. That's one meterper 1,660-ish people.