Probably Sept, Oct, Nov, Jan, Feb average. Many ratings-based buyers use a 3 to 6 month average, and they skip December and Holiday. Now, they will skip the months from March onward until we have anew normal established.
Nielsen sent a clients-only memo on Monday suggesting that March and April not be used as a basis for advertising buys as the numbers are not typical and will not represent normal listening levels.
How can that be even close to accurate if Music stations have lost between 30% and up to about 60% of their AQH persons listening? If I was an advertiser that wanted to buy TODAY, let's say hypothetically, a station targeting Adults 25-54, I would buy spots on the News/Talk with the highest "share". The April numbers reflect who's listening to what, NOW. Not Sept, Oct, Nov of last year.
The 12-week rolling average of Feb, Mar and Apr, would be most accurate if they wanted to use a 3 month average.
Agreed, the Music lovers are not listening as much, some not at all, due to differences in daily routine as well as other factors. So if I wanted to reach the greatest amount of listeners TODAY with the audience that is left, "share" would still be important no matter how large or small the "pie" is.
Please correct me if I am wrong about this.