{"entity":{"iso2":"PL","iso3":"POL","name":"Poland","slug":"poland"},"indicator":{"licence":"CC BY 4.0 (Eurostat)","slug":"biochemical-oxygen-demand-in-rivers","source":"Eurostat","source_url":"https://ec.europa.eu/eurostat/databrowser/view/sdg_06_30","title":"Biochemical oxygen demand in rivers","unit":"Milligrams per litre"},"observations":[{"date":"2007-01-01","value":3.11},{"date":"2008-01-01","value":3.03},{"date":"2009-01-01","value":2.98},{"date":"2010-01-01","value":2.93},{"date":"2011-01-01","value":2.89},{"date":"2012-01-01","value":2.84},{"date":"2013-01-01","value":2.78},{"date":"2014-01-01","value":2.73},{"date":"2015-01-01","value":2.68},{"date":"2016-01-01","value":2.64},{"date":"2017-01-01","value":2.6},{"date":"2018-01-01","value":2.57},{"date":"2019-01-01","value":2.55},{"date":"2020-01-01","value":2.52},{"date":"2021-01-01","value":2.51},{"date":"2022-01-01","value":2.5},{"date":"2023-01-01","value":2.47}],"summary":{"latest_period":"2023-01-01","latest_value":2.47,"max":3.11,"mean":2.72529,"min":2.47,"of":21,"rank":8,"trend":"falling"}}