What is the time period for counts (cites, papers, cites per paper)?
The time period for counts is 10 years, plus partial year counts for the current year (data is updated every two months). This means that any papers in the 10+ year period can be cited by any items in that same period. Database years (the actual years when items are entered into the database, which are slightly different from the publication year) are used to define the time periods. After an 11 year time period is reached, the file reverts to a 10 year plus two month time span for the next bi-monthly update.