Why do I see different click commissions in the commission list?

Click commissions in the Commission list for the same day, same IP, same affiliate, and the same banner are summed up in order to avoid the database grow too large.
 
So, if you provide $0.01 per click and a particular customer clicks the same banner of Test Affiliate in a day 10x, then in the commission list, you will see regarding the customer's IP  $0.1 click commission associated with Test Affiliate.