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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		*	*	*	*	*	*	0	*
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		0.2	*	*	*	1.4	0.54	5	0.1
2009		0.05	*	*	*	7.0	2.30	9	0.1
2008		0.2	*	*	*	0.2	1.30	1	0.1
2007		0.4	*	*	*	3.0	1.30	3	0.1
2006		0.2	1.2	*	2.5	3.8	1.01	16	0.1
2005		0.1	0.4	*	2.5	3.1	0.96	17	0.1
2004		0.2	*	*	*	2.6	0.93	10	0.1
2003		0.2	0.8	*	2.6	3.6	0.99	17	0.1
2002		0.2	1.9	*	5.6	7.7	2.33	19	0.1
2001		0.2	1.3	1.50	3.0	4.1	1.13	27	0.1
2000		0.3	0.9	1.59	3.7	5.0	1.43	28	0.1
1999		0.05	1.0	1.93	5.6	6.9	2.07	28	0.1
1998		0.05	1.1	*	4.9	6.7	1.82	24	0.1
1997		0.1	0.9	*	5.9	6.3	2.27	15	0.1
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.