Daily Impressions from your google.com/analytics account. (it’s a free service if you have a google.com/adwords account)
Unique Visitors Per Day can be from google analytics or from compete.com
Transactions Per Day can be taken from google analytics or from your e-commerce system.
Average Transaction if the total amount of revenue divided by the number of orders. This can be taken from google analytics or your e-commerce system.
Daily Advertising Budget is the total amount of paid advertising you spend on a daily basis (google adwords, yahoo and msn PPC, etc).