“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.
Social Sciences734Engineering285Economics, Econometrics and Finance159Technology: Bridge engineering1Technology: Building construction1Technology: Highway engineering. Roads and pavements1Technology: Railroad engineering and operation1