By utilizing the Event List Report, you can adjust this Report to only show Definite Events.
Click on Reports in your navigation bar at the left-hand side of Event Temple
Select the Event List Report
Press the "+Add Filter" button at the top-left of the Report
Select the Event Status from the list
Click on "Search" below the Event Status to select the "Definite" Status
You can save this Report, or download it as a CSV, HTML, or PDF file.