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	Annual Statewide Toxics Summary Sulfur FAQs nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2017		*	*	*	*	*	*	0	*
2016		*	*	*	*	*	*	0	*
2015		*	*	*	*	*	*	0	*
2014		*	*	*	*	*	*	0	*
2013		25.5	600	*	1400	2300	422	431	51
2012		30	480	607	1200	2200	406	430	60
2011		30	480	638	1300	3900	527	415	60
2010		30	470	566	1100	3500	419	428	60
2009		30	550	775	1700	6200	660	520	60
2008		42	650	768	1500	4500	509	503	20
2007		30	600	*	2000	3600	732	369	60
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		57	550	*	1200	1600	386	86	2
2002		47	700	836	1600	3100	525	491	2
2001		55	650	827	1700	3400	599	505	2
2000		95	590	775	1600	3100	559	472	2
1999		39	670	782	1500	5600	557	565	2
1998		6	580	742	1600	3000	550	561	2
1997		55	580	735	1500	4200	546	557	2
1996		64	670	759	1500	3300	496	595	2
1995		50	700	792	1500	3300	525	602	2
1994		81	660	845	1700	4800	699	585	2
1993		120	650	928	2000	3500	706	575	2
1992		39	780	981	2000	5700	733	554	2
1991		11	840	1070	2000	20000	1100	567	2
1990		99	760	*	1900	3200	636	309	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.