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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Benzo(a)pyrene-10 nanograms per cubic meter

Read About Estimated Risk

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit	Estimated Risk
2005		0.025	*	*	*	0.14	0.048	5	0.05	*
2004		0.025	0.025	0.088	0.16	0.69	0.152	31	0.05	0.3
2003		0.025	0.025	0.100	0.20	0.63	0.152	31	0.05	0.3
2002		0.025	0.025	0.094	0.21	0.74	0.145	31	0.05	0.3
2001		0.025	0.025	0.190	0.63	1.4	0.378	30	0.05	0.6
2000		0.025	0.025	0.185	0.53	1.1	0.275	31	0.05	0.6
1999		0.025	0.025	0.272	0.93	1.4	0.398	30	0.05	0.9
1998		0.025	0.025	0.267	0.84	2.9	0.590	30	0.05	0.8
1997		0.025	0.025	0.212	0.51	1.5	0.334	31	0.05	0.7
1996		0.025	0.025	0.165	0.48	1.1	0.286	24	0.05	0.5
1995		0.025	0.05	0.200	0.46	1.2	0.308	24	0.05	0.6
1994		0.025	0.15	*	1.27	1.8	0.600	14	0.05	*
1993		0.025	0.06	0.385	1.3	2.6	0.648	24	0.05	1
1992		0.025	0.025	0.343	1.14	2.2	0.603	24	0.05	1
1991		0.025	0.10	0.249	0.64	1.4	0.360	24	0.05	0.8
1990		0.025	0.08	0.536	1.14	4.2	0.945	24	0.05	2
1989		0.025	0.06	0.527	1.55	5.5	1.21	24	0.05	2

	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.