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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Potassium 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		*	*	*	*	*	*	0	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		160	*	*	*	720	209	5	5
2002		240	530	594	870	1100	210	29	5
2001		160	520	504	770	890	203	30	3
2000		190	550	*	880	1100	254	14	3
1999		150	530	*	860	1300	257	20	3
1998		190	510	527	780	1200	248	24	3
1997		97	440	487	790	930	214	27	3
1996		150	460	548	940	1300	272	27	3
1995		88	540	*	930	1900	365	27	3
1994		120	470	*	750	1100	216	27	3
1993		120	510	517	780	1900	338	29	3
1992		100	440	475	830	1100	270	26	3
1991		200	460	715	760	5800	968	31	3
1990		270	720	*	900	1200	233	15	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.