“2-yr mean citedness” is the OpenAlex field summary_stats.2yr_mean_citedness (CC0): mean citations per paper over a two-year window. It is a raw bibliometric field, not a journal rating, and is not used for default ranking.
Agricultural and Biological Sciences12Medicine12Biochemistry, Genetics and Molecular Biology6Pharmacology, Toxicology and Pharmaceutics6Computer Science5Arts and Humanities3Social Sciences3Social Sciences: Social pathology. Social and public welfare. Criminology1