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	Annual Toxics Summary San Jose-4th Street 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	*	*
2004		*	*	*	*	*	*	0	*	*
2003		*	*	*	*	*	*	0	*	*
2002		0.025	*	*	*	0.71	0.269	10	0.05	*
2001		0.025	0.025	0.153	0.26	2.4	0.439	31	0.05	0.5
2000		0.025	0.025	0.152	0.38	1.3	0.271	30	0.05	0.5
1999		0.025	0.025	0.196	0.59	1.5	0.324	30	0.05	0.6
1998		0.025	0.05	0.200	0.65	1.4	0.347	31	0.05	0.6
1997		0.025	0.025	0.226	0.39	1.9	0.412	30	0.05	0.7
1996		0.025	0.025	0.150	0.59	0.79	0.235	24	0.05	0.5
1995		0.025	0.08	0.243	0.43	2.5	0.511	24	0.05	0.8
1994		0.05	0.30	*	2.19	3.5	1.05	14	0.05	*
1993		0.025	0.10	0.546	1.77	3.4	0.926	24	0.05	2
1992		0.025	0.09	0.424	1.7	2.4	0.718	24	0.05	1
1991		0.025	0.06	0.268	1.0	1.1	0.375	24	0.05	0.9
1990		0.025	0.10	0.706	1.39	6.3	1.55	24	0.05	2
1989		0.025	0.23	0.795	1.9	4.2	1.08	24	0.05	3

	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.