An estimate of the number of words added to mainspace articles by the course's students during the course term

This is the number of reference tags and shortened footnote templates added to articles, and can include multiple references to the same source. The data comes from the reference-counter Toolforge API.

The estimated number of views to articles edited by enrolled editors since the editor made their first edit to each article

This is the number of unique users who have edited articles in the course.

This is the date of the program.