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	Annual Toxics Summary Calexico-Ethel Street FAQs Tin nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		0.78	2.6	*	5.1	10.9	2.42	21	1.56
2022		0.78	2.9	4.08	9.4	18.6	4.37	30	1.56
2021		0.78	2.1	*	9.1	26.3	5.71	23	1.56
2020		0.78	*	*	*	9.7	3.45	7	1.56
2019		0.78	3.4	*	9.0	14.4	3.77	24	1.56
2018		0.78	3.8	*	8.0	15.3	3.62	23	1.56
2017		0.78	2.0	3.26	8.1	13.3	3.22	30	1.56
2016		0.78	2.2	3.85	7.3	12.5	3.38	29	1.56
2015		0.78	2.5	3.65	7.0	15.1	3.16	30	1.56
2014		1	2.3	3.48	9.0	23	4.66	28	2.0
2013		0.8	0.8	*	3.2	7.0	1.42	27	1.6
2012		1.5	1.5	1.80	3.2	3.8	0.71	27	3.0
2011		1.5	*	*	*	3.4	0.95	4	3.0
2010		1.5	1.5	1.63	1.5	4.5	0.57	28	3.0
2009		1.5	1.5	1.80	1.5	6.9	1.06	31	3.0
2008		*	*	*	*	*	*	0	*
2007		0.75	0.75	*	3.7	9.9	2.40	16	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		2.5	*	*	*	6.0	1.68	5	5.0
2002		2	2	3.09	6.2	9.0	2.02	29	4.0
2001		2	2	2.36	2	6.0	1.03	30	4.0
2000		2	2	*	2	11	2.24	29	4.0
1999		2	2	3.03	7.0	14	2.81	27	4.0
1998		2	2	2.49	5.0	6.0	1.22	27	4.0
1997		2	2	*	5.7	11	2.30	24	4.0
1996		2	2	2.60	4.0	8.0	1.35	28	4.0
1995		2	2	*	2	2	0.00	15	4.0
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.