CiteScore, from Elsevier, is a newer metric to measure how often a journal is cited over time, leading to a value that some use as a measure of the quality of the specific journal. CiteScore metrics use three years of citation data over a broader range of publications within the journals to derive their numbers, and their rankings and categories are wider and less stringent than the JCR (Salisbury, 2020); yet their values are quite similar to the values of the impact factor from the Journal Citation Reports from Clarivate. CiteScore is available on the Web for free, which is useful, especially for people who don't have access to the JCR, which is by subscription only.