A trending report is exactly what it claims to be, a measure of trends. While you can view some detailed transaction information (tracks/albums downloaded, customer info, etc.), the trending reports will differ from official sales reports for several reasons, including:
- iTunes™ customers may take advantage of the “complete my album” program at a later time
- iTunes™ customers may return a purchase
- Months are not divided evenly into weeks and iTunes™ accounting months do not match calendar months.