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	Annual Toxics Summary Los Angeles-North Main 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		0.025	0.025	0.073	0.19	0.40	0.085	31	0.05	0.2
2003		0.025	0.025	0.061	0.17	0.25	0.064	31	0.05	0.2
2002		0.025	0.05	0.082	0.15	0.40	0.084	31	0.05	0.3
2001		0.025	0.025	0.085	0.26	0.52	0.121	30	0.05	0.3
2000		0.025	0.025	0.113	0.26	0.62	0.152	31	0.05	0.4
1999		0.025	0.025	0.123	0.29	0.58	0.146	30	0.05	0.4
1998		0.025	0.10	0.150	0.33	0.95	0.191	30	0.05	0.5
1997		0.025	0.10	0.146	0.33	0.45	0.128	30	0.05	0.5
1996		0.025	0.07	0.122	0.25	0.71	0.157	24	0.05	0.4
1995		0.025	0.11	0.144	0.25	0.59	0.133	24	0.05	0.5
1994		0.025	0.23	*	0.47	0.81	0.217	14	0.05	*
1993		0.025	0.20	0.241	0.51	1.0	0.257	24	0.05	0.8
1992		0.025	0.18	0.216	0.50	0.88	0.223	24	0.05	0.7
1991		0.025	0.09	0.224	0.52	1.2	0.287	24	0.05	0.7
1990		0.025	0.15	0.255	0.56	1.1	0.292	24	0.05	0.8
1989		0.025	0.21	0.387	0.97	1.4	0.420	24	0.05	1

	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.