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	Annual Toxics Summary Stockton-Hazelton 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		130	510	*	890	1000	237	30	51
2012		100	430	448	750	1200	253	29	60
2011		30	380	*	730	1400	294	29	60
2010		100	350	377	580	1000	187	29	60
2009		73	440	467	750	1300	286	32	60
2008		57	570	584	970	1100	269	33	20
2007		110	470	*	750	910	216	30	60
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		74	*	*	*	720	238	5	2
2002		47	630	603	980	1200	286	35	2
2001		64	460	566	900	1000	247	35	2
2000		150	480	493	850	1200	251	33	2
1999		190	560	587	860	1500	335	31	2
1998		120	460	522	790	920	210	31	2
1997		110	560	583	900	1100	264	29	2
1996		180	540	570	930	1100	254	32	2
1995		91	580	*	1100	1400	324	27	2
1994		190	560	537	880	1000	229	34	2
1993		320	620	664	990	1200	241	31	2
1992		270	670	742	1200	1400	339	30	2
1991		240	830	834	1400	1600	359	31	2
1990		230	660	*	1100	1300	280	17	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.