{"entity":{"iso2":"TD","iso3":"TCD","name":"Chad","slug":"chad"},"indicator":{"licence":"CC BY 4.0 (Our World in Data)","slug":"pm-exposure-1990-2017","source":"Global Burden of Disease Study 2023, Institute for Health Metrics and Evaluation (IHME), via World Bank (2026) \u2013 processed by Our World in Data","source_url":"https://ourworldindata.org/grapher/pm-exposure-1990-2017","title":"Particulate matter exposure in 1990 vs. 2017","unit":"micrograms per cubic meter"},"observations":[{"date":"1990-01-01","value":44.4815},{"date":"1991-01-01","value":42.8123},{"date":"1992-01-01","value":42.9341},{"date":"1993-01-01","value":43.0559},{"date":"1994-01-01","value":43.1777},{"date":"1995-01-01","value":39.7177},{"date":"1996-01-01","value":43.4213},{"date":"1997-01-01","value":43.5431},{"date":"1998-01-01","value":43.6648},{"date":"1999-01-01","value":43.7866},{"date":"2000-01-01","value":45.6993},{"date":"2001-01-01","value":40.5359},{"date":"2002-01-01","value":43.6201},{"date":"2003-01-01","value":42.4157},{"date":"2004-01-01","value":47.0635},{"date":"2005-01-01","value":45.4351},{"date":"2006-01-01","value":46.2028},{"date":"2007-01-01","value":45.4605},{"date":"2008-01-01","value":45.1161},{"date":"2009-01-01","value":45.1776},{"date":"2010-01-01","value":43.4307},{"date":"2011-01-01","value":44.87},{"date":"2012-01-01","value":43.961},{"date":"2013-01-01","value":42.9204},{"date":"2014-01-01","value":42.6395},{"date":"2015-01-01","value":53.0105},{"date":"2016-01-01","value":49.5472},{"date":"2017-01-01","value":47.8355},{"date":"2018-01-01","value":43.8717},{"date":"2019-01-01","value":41.5536},{"date":"2020-01-01","value":41.4493},{"date":"2021-01-01","value":40.2492},{"date":"2022-01-01","value":42.4135},{"date":"2023-01-01","value":42.9595}],"summary":{"latest_period":"2023-01-01","latest_value":42.9595,"max":53.0105,"mean":44.0598,"min":39.7177,"of":200,"rank":18,"trend":"flat"}}