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

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		160	880	*	1400	1800	423	27	51
2012		220	710	730	1100	1500	333	24	60
2011		91	590	673	1400	1600	420	27	60
2010		180	550	617	970	1200	255	28	60
2009		75	640	819	1600	1900	517	31	60
2008		240	750	738	960	1500	262	30	20
2007		170	1000	*	2000	2300	638	22	60
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		430	*	*	*	1100	264	5	2
2002		210	760	750	1000	1200	249	29	2
2001		94	660	659	890	1200	254	30	2
2000		330	720	*	1100	1500	279	29	2
1999		240	670	652	920	1200	236	27	2
1998		460	740	786	1100	1400	264	27	2
1997		290	960	*	1400	1600	356	24	2
1996		170	790	811	1100	1600	290	28	2
1995		280	830	*	1200	1500	302	15	2
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.