The exact number of days is configurable. Summary defaults to seven days. Reload - A request for an item followed by another request for the same item with no other requests in between in the same visit. These can be cause by the user hitting the reload button, but subsequent attempts to complete a failed download, and because requests that would otherwise have occurred were satisfied by a cache. Request - When you type a URL into a web browser, it sends a request for the item named by that URL to the server.
Request can mean the entire request or specifically the name of the item contained in the request.
Search Phrase - Summary attempts to extract the search string typed by user into one of the major search engines. The entire string is called the search phrase. The previous non-graphic request in a visit. The first request is step one, the second is step two, and so on. Steps are normally displayed as the average of many step numbers for the same item from different visits.