{"entity":{"iso2":"EE","iso3":"EST","name":"Estonia","slug":"estonia"},"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":"1992-01-01","value":0.205722},{"date":"1993-01-01","value":0.0771312},{"date":"1994-01-01","value":0.0884606},{"date":"1995-01-01","value":0.0569229},{"date":"1996-01-01","value":0.081094},{"date":"1997-01-01","value":0.0791064},{"date":"1998-01-01","value":0.0772797},{"date":"1999-01-01","value":0.065451},{"date":"2000-01-01","value":0.0635216},{"date":"2001-01-01","value":0.0555988},{"date":"2002-01-01","value":0.0319123},{"date":"2003-01-01","value":0.0357456},{"date":"2004-01-01","value":0.0650873},{"date":"2005-01-01","value":0.0991467},{"date":"2006-01-01","value":0.077442},{"date":"2007-01-01","value":0.0512931},{"date":"2008-01-01","value":0.0400108},{"date":"2009-01-01","value":0.0443433},{"date":"2010-01-01","value":0.0429069},{"date":"2011-01-01","value":0.0381001},{"date":"2012-01-01","value":0.0294483},{"date":"2013-01-01","value":0.0285125},{"date":"2014-01-01","value":0.0455009},{"date":"2015-01-01","value":0.0400172},{"date":"2016-01-01","value":0.035336},{"date":"2017-01-01","value":0.0363526},{"date":"2018-01-01","value":0.0400473},{"date":"2019-01-01","value":0.0389309},{"date":"2020-01-01","value":0.0374469},{"date":"2021-01-01","value":0.0360006}],"summary":{"latest_period":"2021-01-01","latest_value":0.0360006,"max":0.205722,"mean":0.058129,"min":0.0285125,"of":32,"rank":24,"trend":"volatile"}}