{"entity":{"iso2":"NL","iso3":"NLD","name":"Netherlands","slug":"netherlands"},"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":0.444723},{"date":"1993-01-01","value":0.469708},{"date":"1994-01-01","value":0.504686},{"date":"1995-01-01","value":0.512182},{"date":"1996-01-01","value":0.519677},{"date":"1997-01-01","value":0.501117},{"date":"1998-01-01","value":0.405462},{"date":"1999-01-01","value":0.368343},{"date":"2000-01-01","value":0.331223},{"date":"2001-01-01","value":0.753016},{"date":"2002-01-01","value":0.611704},{"date":"2003-01-01","value":0.611704},{"date":"2004-01-01","value":0.474705},{"date":"2006-01-01","value":0.157863},{"date":"2007-01-01","value":0.157863},{"date":"2008-01-01","value":0.142826},{"date":"2009-01-01","value":0.425432},{"date":"2010-01-01","value":0.44825},{"date":"2011-01-01","value":0.502114},{"date":"2012-01-01","value":0.370953},{"date":"2013-01-01","value":0.341472},{"date":"2014-01-01","value":0.329169},{"date":"2015-01-01","value":0.330031},{"date":"2016-01-01","value":0.345582},{"date":"2017-01-01","value":0.326337},{"date":"2018-01-01","value":0.327446},{"date":"2019-01-01","value":0.325747},{"date":"2020-01-01","value":0.306777},{"date":"2021-01-01","value":0.352047}],"summary":{"latest_period":"2021-01-01","latest_value":0.352047,"max":0.753016,"mean":0.403385,"min":0.142826,"of":32,"rank":3,"trend":"falling"}}