These are the most viewed Authors within a given time period.  The top 100 posts are tallied and this page displays the total pageviews for the authors of those posts.

Pageviews are the number of times an author had one of their articles read.

Posts are the number of articles that an author has that appears in Top Pageviews

Average Views Per Post is the average of views an author has received per post that appears in the Top Pageviews