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

Read About Estimated Risk

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit	Estimated Risk
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		0.52	*	*	*	1.6	0.422	5	0.05	*
2009		0.13	*	*	*	7.4	2.34	9	0.05	*
2008		0.35	*	*	*	0.35	1.53	1	0.05	*
2007		0.84	*	*	*	3.9	1.53	3	0.05	*
2006		0.35	1.5	*	4.5	9.9	2.52	16	0.05	*
2005		0.25	1.2	*	5.34	6.8	2.01	17	0.05	*
2004		0.27	*	*	*	5.5	1.97	10	0.05	*
2003		0.52	1.3	*	4.72	6.2	1.75	17	0.05	*
2002		0.45	3.0	*	8.6	12	3.55	19	0.05	*
2001		0.45	2.7	3.09	6.92	8.4	2.32	27	0.05	805
2000		0.7	1.8	2.90	6.8	8.4	2.27	29	0.2	753
1999		0.6	1.9	4.49	13	16	4.72	29	0.2	1167
1998		0.8	2.8	*	5.1	14	3.25	28	0.2	*
1997		0.5	1.4	*	6.0	6.4	2.07	12	0.2	*
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.