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	Annual Toxics Summary Fremont-Chapel Way 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		*	*	*	*	*	*	0	*
2012		*	*	*	*	*	*	0	*
2011		*	*	*	*	*	*	0	*
2010		92	370	*	740	950	240	17	60
2009		110	440	468	830	1300	314	31	60
2008		62	550	614	1000	1600	347	30	20
2007		100	570	*	950	1000	270	21	60
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		93	*	*	*	560	182	5	2
2002		160	600	*	940	1600	304	24	2
2001		150	590	*	870	1300	258	27	2
2000		120	430	496	930	990	264	28	2
1999		180	660	673	1200	1600	396	28	2
1998		250	440	543	980	1300	291	25	2
1997		120	490	*	900	1500	323	28	2
1996		170	580	684	1300	1700	441	30	2
1995		73	520	574	1000	1900	422	30	2
1994		280	580	627	1200	1400	338	29	2
1993		240	490	631	1200	2100	441	29	2
1992		190	570	739	1500	1500	407	31	2
1991		210	810	745	1200	1600	363	29	2
1990		280	650	*	1400	1600	391	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.