The Daily Average Units sold in the Product Tracker is the average units sold since the system has been tracking it, up to a maximum of 60 days. This is different than what you will see in the Extension or Product Database for 'Estimated Sales' as those are estimates for a date range and this is the average of the actual sales.
The Daily Average units sold takes the total sales for the date range and divides by the number of days it has been tracked.
Day 1 sales: 10
Day 2 sales: 20
Day 3 sales: 15
Day 4 sales: 11
Your total sales for this product are: 10+20+15+11= 56
Divide 56 units by 4 days = AVG of 14 units sold per day
Curious about how sales are estimated? Check out this page where we explain the science behind the data: What is AccuSales™?