The sales above baseline (lift) sold for every week of promotion activity. When an item has promotion activity the actual sales during that activity are compared to the expected sales (baseline) that would have sold without the support of the promotion in order to measure the incremental lift. It is possible to have a negative incremental lift if an item does not sell enough extra volume to compensate for the price reduction during a promotion.
Incremental $ lift per week of support
The sales above baseline (lift) sold for every week of promotion activity.