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	Annual Toxics Summary Mexicali-Calzada Benito Juarez FAQs Methyl Chloroform parts per billion

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		*	*	*	*	*	*	0	*
2022		*	*	*	*	*	*	0	*
2021		*	*	*	*	*	*	0	*
2020		*	*	*	*	*	*	0	*
2019		*	*	*	*	*	*	0	*
2018		*	*	*	*	*	*	0	*
2017		*	*	*	*	*	*	0	*
2016		*	*	*	*	*	*	0	*
2015		*	*	*	*	*	*	0	*
2014		*	*	*	*	*	*	0	*
2013		*	*	*	*	*	*	0	*
2012		*	*	*	*	*	*	0	*
2011		*	*	*	*	*	*	0	*
2010		0.005	*	*	*	0.11	0.045	5	0.01
2009		0.01	*	*	*	0.05	0.015	9	0.01
2008		0.01	*	*	*	0.01	0.000	1	0.01
2007		0.02	*	*	*	0.02	0.000	3	0.01
2006		0.01	0.02	*	0.03	0.05	0.009	16	0.01
2005		0.01	0.02	*	0.03	0.04	0.008	17	0.01
2004		0.02	*	*	*	0.04	0.007	10	0.01
2003		0.03	0.03	*	0.04	0.05	0.006	17	0.01
2002		0.005	0.04	*	0.04	0.06	0.011	19	0.01
2001		0.04	0.04	0.044	0.05	0.07	0.008	27	0.01
2000		0.04	0.08	0.082	0.12	0.15	0.027	29	0.01
1999		0.05	0.13	*	0.17	0.30	0.063	16	0.01
1998		0.03	0.06	*	0.11	0.15	0.031	23	0.01
1997		0.05	0.08	*	0.13	0.22	0.044	15	0.01
1996		*	*	*	*	*	*	0	*
1995		*	*	*	*	*	*	0	*
1994		*	*	*	*	*	*	0	*
1993		*	*	*	*	*	*	0	*
1992		*	*	*	*	*	*	0	*
1991		*	*	*	*	*	*	0	*
1990		*	*	*	*	*	*	0	*
1989		*	*	*	*	*	*	0	*

	Notes:	Values below the Limit of Detection (LoD) assumed to be ½ LoD. Means and risks shown only for years with data in all 12 months. "*" means there was insufficient or no data available to determine the value.