{"entity":{"iso2":null,"iso3":null,"name":"Madrid","slug":"madrid"},"indicator":{"licence":"CC BY 4.0 (Eurostat)","slug":"nitrogen-dioxide-concentrations-in-european-capital-cities-monthly-averages-experimental","source":"Eurostat","source_url":"https://ec.europa.eu/eurostat/databrowser/view/env_air_no2","title":"Nitrogen dioxide concentrations in European capital cities - monthly averages, experimental statistics","unit":null},"observations":[{"date":"2018-01-01","value":52.4},{"date":"2019-01-01","value":39.4},{"date":"2020-01-01","value":28.9},{"date":"2021-01-01","value":37.2},{"date":"2022-01-01","value":33.9},{"date":"2023-01-01","value":38.9},{"date":"2024-01-01","value":37.6},{"date":"2025-01-01","value":28.4},{"date":"2026-01-01","value":13.5}],"summary":{"latest_period":"2026-01-01","latest_value":13.5,"max":52.4,"mean":34.4667,"min":13.5,"of":30,"rank":18,"trend":"falling"}}