Next to a campaign sent by RevenueWell, you can see how much revenue the campaign generated. After RevenueWell determines the visits generated by a campaign, it will add up the associated revenue with those visits.
Click on the number of visits generated (in blue font) to show you which visits are tied to the campaign.
This table shows you when the visits occurred and what revenue was brought in from each. The sum of these is the number listed on the main page in the Campaigns tab.