{"entity":{"iso2":"CH","iso3":"CHE","name":"Switzerland","slug":"switzerland"},"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":0.273792},{"date":"1993-01-01","value":0.273792},{"date":"1994-01-01","value":0.212008},{"date":"1995-01-01","value":0.176207},{"date":"1996-01-01","value":0.202495},{"date":"1997-01-01","value":0.254046},{"date":"1998-01-01","value":0.184735},{"date":"1999-01-01","value":0.211257},{"date":"2000-01-01","value":0.155259},{"date":"2001-01-01","value":0.156805},{"date":"2002-01-01","value":0.159674},{"date":"2003-01-01","value":0.147973},{"date":"2004-01-01","value":0.13364},{"date":"2005-01-01","value":0.131308},{"date":"2006-01-01","value":0.137944},{"date":"2007-01-01","value":0.125841},{"date":"2008-01-01","value":0.118305},{"date":"2009-01-01","value":0.115155},{"date":"2010-01-01","value":0.0456181},{"date":"2011-01-01","value":0.0406846},{"date":"2012-01-01","value":0.0107217},{"date":"2013-01-01","value":0.00938857},{"date":"2014-01-01","value":0.00938857}],"summary":{"latest_period":"2014-01-01","latest_value":0.00938857,"max":0.273792,"mean":0.142871,"min":0.00938857,"of":32,"rank":31,"trend":"volatile"}}