Webalizer is a web server log analysis program. It produces highly detailed, easily configurable usage reports in HTML format for viewing with a standard web browser.
To access Webalizer, after logging in select Manage Website from the websites box (if you have more than one website hosted with Gradwell you will have to choose the correct one using the dropdown box).
From the next page, select More Tools...
...and then Webalizer Web Statistics.
You will now see your login credentials for the Webalizer service, including a link to the login page. If you require guidance on how to use the Webalizer output, there is a guide here.