What I see: The Analytics page provided to me by Squarespace displays an IP Address, time and date of visit, which content on this site was viewed, and the time and date it was viewed. Only this information for the current and previous seven days is displayed.
What I do with this information: I use this information to see which IP addresses (unique visitors) are accessing the site and what content is being viewed. This helps me determine which content is popular with visitors. Information beyond the previous seven days is not displayed on the Analytics page, which is not publicly accessible, nor is it stored by me.