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	Annual Toxics Summary Stockton-Hazelton Street FAQs Potassium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		*	*	*	*	*	*	0	*
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		*	*	*	*	*	*	0	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		140	*	*	*	500	135	5	5
2002		13	500	478	790	1300	255	35	5
2001		120	370	438	650	1400	263	35	3
2000		88	380	432	780	1600	298	33	3
1999		120	420	466	660	2100	344	31	3
1998		99	470	529	840	2100	382	31	3
1997		76	510	570	870	1900	341	29	3
1996		120	430	441	750	880	208	32	3
1995		150	340	*	1100	2000	462	27	3
1994		130	550	529	970	1200	275	34	3
1993		130	500	608	1100	2100	395	31	3
1992		180	550	602	1100	1300	309	30	3
1991		1.5	550	679	1300	2100	568	31	3
1990		360	780	*	1600	1900	462	17	3
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.