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The number frequently refers to the 120 µg/m³ threshold for ozone (O3) concentrations.

: A 2023 status report from the European Environment Agency discusses 2021-2022 air quality data, noting that 22 reporting countries registered ozone levels above this 120 µg/m³ target. Format : Informative report/analysis. 2. Linguistic Research (L2 Learner Corpora) Download 120 2022 txt

Papers published in journals like Springer's Moscow University Geology Bulletin (e.g., issues dated April 2026 ) frequently detail ore veins and zones. The number frequently refers to the 120 µg/m³

For researchers looking for files or corpora, the CLARIN ERIC repository hosts language datasets. Download 120 2022 txt