It's possible to export all the reports available on the external reports page to Excel, PDF or Word format. All you need to do is click the export button at the top of the report once it's finished running.
Make sure you don't have a pop-up clicker active in your internet browser, or you will not see the next window. Here is a tutorial on disabling pop-up blockers.
The pop-up window will allow you to select to which format you want to export the report.
Select the format you wish to export and click the OK button.
The Excel (Data Only) format will allow you to treat the report like a spreadsheet, including sorting columns, filtering rows and performing calculations on the cells.