Page "Billboard 200" Paragraph 22

The chart omits unit sales for listed albums and total recorded sales, making it impossible to determine, for example, if the number one album this week sold as well as the number one from the same period in the prior year.

It is also impossible to determine the relative success of albums on a single chart ; there is no indication of whether the number one album sold thousands more copies than number 50, or only dozens more.

All music genres are combined, but there are separate Billboard charts for individual market segments.

The complete sales data broken down by location is made available, but only in the form of separate SoundScan subscriptions.