To access the advanced settings section click this icon in the control panel:
Clicking the "Download" button will take you to a list of all your log files. Click on each of the files in order to download that specific log file. There is two types of compressed files, gz files and bz2 files. Gz files is uncompressed automatically when you save them to your computer, bz2 files has to be uncompressed with a special program. Through your log files you can access visitor information (IP-addresses, filenames, time of visit and more). This is the information used to generate your statistics.