As far as I understand it, it isn't a number shown or a total. Instead each basket gets a bar with green-orange-red zones, and the sizes of those chunks on the

As far as I understand it, it isn't a number shown or a total. Instead each basket gets a bar with green-orange-red zones, and the sizes of those chunks on the bar is what's changing. This makes it possible to see your ratio of high vs low footprint items, without being too much influenced by the size of the basket, such that one can follow their own trend over time.