{"entity":{"iso2":"BG","iso3":"BGR","name":"Bulgaria","slug":"bulgaria"},"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":0.0669584},{"date":"1993-01-01","value":0.0669584},{"date":"1994-01-01","value":0.302812},{"date":"1995-01-01","value":0.212868},{"date":"1996-01-01","value":0.0199876},{"date":"1997-01-01","value":0.203873},{"date":"1998-01-01","value":0.280492},{"date":"1999-01-01","value":0.199043},{"date":"2000-01-01","value":0.232855},{"date":"2001-01-01","value":0.279551},{"date":"2002-01-01","value":0.314929},{"date":"2003-01-01","value":0.314155},{"date":"2004-01-01","value":0.14541},{"date":"2005-01-01","value":0.179139},{"date":"2006-01-01","value":0.174079},{"date":"2007-01-01","value":0.115428},{"date":"2008-01-01","value":0.155237},{"date":"2009-01-01","value":0.134633},{"date":"2010-01-01","value":0.124573},{"date":"2011-01-01","value":0.0891446},{"date":"2012-01-01","value":0.0941664},{"date":"2013-01-01","value":0.137587},{"date":"2014-01-01","value":0.0668257},{"date":"2015-01-01","value":0.072742},{"date":"2016-01-01","value":0.0876784},{"date":"2017-01-01","value":0.0784644},{"date":"2018-01-01","value":0.163815},{"date":"2019-01-01","value":0.119329},{"date":"2020-01-01","value":0.152209},{"date":"2021-01-01","value":0.210273}],"summary":{"latest_period":"2021-01-01","latest_value":0.210273,"max":0.314929,"mean":0.15984,"min":0.0199876,"of":32,"rank":6,"trend":"volatile"}}