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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Phosphorus 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		5	*	*	*	23	7.6	5	2
2002		11	35	40.0	64	92	18.7	29	2
2001		7.5	41	41.2	54	120	18.9	30	15
2000		22	41	*	65	90	17.5	14	15
1999		17	53	*	77	120	24.2	20	15
1998		16	39	39.8	57	76	13.7	24	15
1997		7.5	34	33.0	48	62	13.2	27	15
1996		7.5	29	30.8	55	67	17.2	27	15
1995		7.5	7.5	*	59	130	29.9	27	15
1994		7.5	7.5	*	18	24	5.6	13	15
1993		*	*	*	*	*	*	0	*
1992		1	2	*	13	18	5.6	17	2
1991		1	4	9.2	22	50	12.6	31	2
1990		1	18	*	60	60	23.4	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.