The date that the item in question first appeared in the log files, during the period covered by the entire report. It may also have appeared in previous log files that are not being reported on. Goal - Summary can be configured to track which visits contain requests that you specify as being the Goal. The number of visits which contain requests matching the pattern is tracked for each referring domain, search phrase, and search word. Graphic - A request for a file containing an image.
Summary uses the file name extension to determine if a request is for a graphic.
The set of extensions used to make this determination can be configured . Requests for graphics are not counted as steps in a visit. Hijacks - The number of visits accessing only graphics. This can happen for any of several reasons. One common cause is other web sites including your graphics on their pages.