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	Annual Toxics Summary Simi Valley-Cochran Street 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		25.5	540	*	1500	1500	470	26	51
2012		62	390	*	1100	1600	401	27	60
2011		30	390	*	890	3900	772	25	60
2010		30	540	516	940	1500	343	28	60
2009		30	540	743	1600	2200	580	31	60
2008		110	810	815	1500	1900	485	29	20
2007		120	360	*	1200	3200	726	19	60
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		370	*	*	*	1400	504	4	2
2002		130	840	963	1800	2400	635	29	2
2001		100	990	*	2300	3000	841	24	2
2000		270	910	*	1800	2000	629	15	2
1999		64	900	*	1600	2600	598	27	2
1998		110	840	879	1800	2200	661	29	2
1997		110	690	876	1900	2200	647	31	2
1996		72	760	880	1700	2000	551	29	2
1995		71	780	889	1800	2300	638	31	2
1994		150	1000	*	2100	3000	758	27	2
1993		120	770	1160	1900	3300	899	31	2
1992		92	1200	*	1800	3000	789	22	2
1991		140	990	1190	2200	3200	798	28	2
1990		99	900	*	1800	1900	613	16	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.