{"entity":{"iso2":"PL","iso3":"POL","name":"Poland","slug":"poland"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"average-ammonium-concentration-in-freshwater","source":"European Environment Agency (2023) \u2013 with minor processing by Our World in Data","source_url":"https://ourworldindata.org/grapher/average-ammonium-concentration-in-freshwater","title":"Average ammonium concentration in freshwater","unit":"milligrams per litre"},"observations":[{"date":"1998-01-01","value":0.167396},{"date":"1999-01-01","value":0.151017},{"date":"2000-01-01","value":0.140468},{"date":"2001-01-01","value":0.0882784},{"date":"2002-01-01","value":0.084392},{"date":"2003-01-01","value":0.0866128},{"date":"2004-01-01","value":0.0666252},{"date":"2005-01-01","value":0.0618134},{"date":"2006-01-01","value":0.107363},{"date":"2007-01-01","value":0.105253},{"date":"2008-01-01","value":0.0912848},{"date":"2009-01-01","value":0.113888},{"date":"2010-01-01","value":0.10757},{"date":"2011-01-01","value":0.102311},{"date":"2012-01-01","value":0.0951017},{"date":"2013-01-01","value":0.089516},{"date":"2014-01-01","value":0.0887933},{"date":"2015-01-01","value":0.0930966},{"date":"2016-01-01","value":0.0902436},{"date":"2017-01-01","value":0.0838288},{"date":"2018-01-01","value":0.0823743},{"date":"2019-01-01","value":0.0829737},{"date":"2020-01-01","value":0.0859453},{"date":"2021-01-01","value":0.0885335}],"summary":{"latest_period":"2021-01-01","latest_value":0.0885335,"max":0.167396,"mean":0.0981117,"min":0.0618134,"of":32,"rank":15,"trend":"falling"}}