What is meant by the term percentile?
The term percentile denotes a citation threshold at or above, which a fixed fraction of papers fall when the papers are ranked in descending order by citation count. The term percentile is used to indicate a fixed fraction of top papers ordered by citation count. The levels we have selected for listing by field and year are 0.01%, 0.1%, 1.0%, 10%, 20.00%, and 50.00% (50% corresponds to the median citation value).