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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Sulfur nanograms per cubic meter

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		180	650	*	1500	1800	491	28	51
2012		220	550	*	1300	1500	376	26	60
2011		120	650	722	1500	2400	557	31	60
2010		150	690	648	1000	1600	349	27	60
2009		200	700	893	1900	2100	593	31	60
2008		210	850	864	1400	1800	426	28	20
2007		110	1100	*	2000	2500	662	25	60
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		320	*	*	*	730	166	5	2
2002		190	780	933	1500	2500	518	29	2
2001		150	1000	1030	1700	2900	628	30	2
2000		210	850	*	1600	2400	657	14	2
1999		270	1200	*	2000	2900	752	20	2
1998		240	960	931	1700	1900	535	24	2
1997		140	560	773	1500	1800	508	27	2
1996		280	960	928	1500	1700	407	27	2
1995		430	1000	*	1500	1900	388	27	2
1994		190	900	*	1800	2800	697	27	2
1993		240	820	1120	2400	3400	847	29	2
1992		170	1100	1180	2300	2800	765	26	2
1991		240	960	1990	2200	20000	3490	31	2
1990		360	1100	*	2100	2800	745	15	2
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.