“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.
Subject classification
Environmental Science204Biochemistry, Genetics and Molecular Biology76Pharmacology, Toxicology and Pharmaceutics57Materials Science54Immunology and Microbiology49