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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Benzo(b)fluoranthene-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		0.06	*	*	*	0.28	0.094	5	0.05	*
2004		0.025	0.025	0.107	0.25	0.61	0.150	31	0.05	0.03
2003		0.025	0.025	0.125	0.24	0.67	0.167	31	0.05	0.04
2002		0.025	0.025	0.144	0.41	0.87	0.201	31	0.05	0.05
2001		0.025	0.06	0.226	0.78	1.3	0.371	30	0.05	0.07
2000		0.025	0.06	0.215	0.64	1.0	0.282	31	0.05	0.07
1999		0.025	0.07	0.297	1.01	1.3	0.396	30	0.05	0.09
1998		0.025	0.06	0.273	0.68	2.8	0.558	30	0.05	0.09
1997		0.025	0.025	0.232	0.56	1.3	0.324	31	0.05	0.07
1996		0.025	0.05	0.169	0.49	0.88	0.250	24	0.05	0.05
1995		0.025	0.09	0.243	0.67	1.2	0.329	24	0.05	0.08
1994		0.05	0.32	*	1.47	1.5	0.590	14	0.05	*
1993		0.025	0.10	0.431	1.22	2.3	0.597	24	0.05	0.1
1992		0.025	0.07	0.406	1.28	2.4	0.686	24	0.05	0.1
1991		0.025	0.20	0.336	0.93	1.4	0.403	24	0.05	0.1
1990		0.025	0.14	0.719	2.14	3.2	0.998	24	0.05	0.2
1989		0.025	0.16	*	0.89	3.0	0.838	18	0.05	*

	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.