{"entity":{"iso2":"ES","iso3":"ESP","name":"Spain","slug":"spain"},"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":"2004-01-01","value":0.0356921},{"date":"2005-01-01","value":0.0356921},{"date":"2006-01-01","value":0.0356921},{"date":"2007-01-01","value":0.408655},{"date":"2008-01-01","value":0.358517},{"date":"2009-01-01","value":0.30251},{"date":"2010-01-01","value":0.249053},{"date":"2011-01-01","value":0.18239},{"date":"2012-01-01","value":0.185992},{"date":"2013-01-01","value":0.169341},{"date":"2014-01-01","value":0.162235},{"date":"2015-01-01","value":0.230797},{"date":"2016-01-01","value":0.346822},{"date":"2017-01-01","value":0.383565},{"date":"2018-01-01","value":0.417242},{"date":"2019-01-01","value":0.441448},{"date":"2020-01-01","value":0.297591},{"date":"2021-01-01","value":0.288314}],"summary":{"latest_period":"2021-01-01","latest_value":0.288314,"max":0.441448,"mean":0.251753,"min":0.0356921,"of":32,"rank":4,"trend":"volatile"}}