{"entity":{"iso2":null,"iso3":null,"name":"Polk","slug":"polk"},"indicator":{"licence":"OECD Terms and Conditions (attribution required)","slug":"air-pollution-cities-and-fuas-population-exposure-to-nitrogen-dioxide","source":"Organisation for Economic Co-operation and Development","source_url":"https://data-explorer.oecd.org/vis?df[ds]=dsDisseminateFinalDMZ&df[id]=DSD_FUA_ENV@DF_POLLUTION","title":"Air pollution - Cities and FUAs \u2014 Population exposure to nitrogen dioxide","unit":"Microgrammes per cubic metre"},"observations":[{"date":"2021-01-01","value":6.92113},{"date":"2022-01-01","value":6.76511},{"date":"2023-01-01","value":0.0174458},{"date":"2024-01-01","value":7.38954},{"date":"2025-01-01","value":10.7472}],"summary":{"latest_period":"2025-01-01","latest_value":10.7472,"max":10.7472,"mean":6.36808,"min":0.0174458,"of":1324,"rank":1021,"trend":"volatile"}}