“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.
Arts and Humanities125Environmental Science39Social Sciences25Technology: Environmental technology. Sanitary engineering: Environmental protection1Technology: Environmental technology. Sanitary engineering: Special types of environment1