Quote:
Originally posted by YOOItsCarmen
I don't know what  I don't get this spins & radio thing  so I request only .. without posting 
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Quote:
Originally posted by Lovaticful
Ask Soma or Abdullah.  They'll tell you how it works.... I think. 
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Little definitions:
Spins
A spin on the Mediabase chart is essentially a play by a monitored station. The spin count that we see on the Mediabase charts each day are a compilation of the spins from all of the Monitored CHR stations on the panel over the course of the previous seven days.
Bullet
A bullet is a positive increase in spins over the course of a week. For example, if a song that has 1200 spins on a Monday had 1000 spins on the previous Monday, its bullet would be 200. If a song is losing spins, we say that it has “lost its bullet.” There is no such thing as a negative bullet, so if a song has a bullet it is moving up the chart.
Audience Impression
Audience Impression measures the estimated number of people that the song has reached. The AI number we receive from All-Access is measured in millions and like the other data on the chart, covers a weeklong period. So if a song has an AI of 21.59 on a given day means that approximately 21,590,000 people heard the song over the span of the past seven days. Different stations obviously have different AI’s, with larger markets having more listeners than smaller markets. In addition to this, the AI a song gains from each spin depends not only on the station but the time of day. AI does not contribute to the rankings on the Mediabase charts, which are determined by spins, but is important for sales and also contributes to the radio portion of the formula that determines the Billboard Hot 100.