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	Annual Toxics Summary Mexicali-Calzada Benito Juarez FAQs meta/para-Xylene 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		0.6	*	*	*	3.4	1.32	5	0.2
2009		0.1	*	*	*	17	5.62	9	0.2
2008		0.5	*	*	*	0.5	2.72	1	0.2
2007		1.2	*	*	*	6.6	2.72	3	0.2
2006		0.7	3.1	*	6.4	11	2.79	16	0.2
2005		0.3	1.4	*	6.7	9.0	2.65	17	0.2
2004		0.5	*	*	*	6.9	2.44	10	0.2
2003		0.5	2.2	*	6.9	9.7	2.64	17	0.2
2002		0.5	5.0	*	16	24	7.41	19	0.2
2001		0.7	4.6	5.28	10	15	3.91	27	0.2
2000		1.1	3.5	4.68	9.6	11	3.23	28	0.6
1999		0.3	2.0	4.89	14.3	18	5.28	28	0.6
1998		0.3	3.1	*	9.5	18	4.53	25	0.6
1997		0.3	2.3	*	13.2	19	5.98	15	0.6
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.