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	Annual Toxics Summary Los Angeles-North Main Street 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	*	*
2004		0.025	0.09	0.107	0.21	0.41	0.093	31	0.05	0.03
2003		0.025	0.06	0.081	0.18	0.24	0.065	31	0.05	0.03
2002		0.025	0.10	0.135	0.31	0.45	0.118	31	0.05	0.04
2001		0.025	0.07	0.128	0.30	0.60	0.152	30	0.05	0.04
2000		0.025	0.10	0.165	0.35	0.76	0.188	31	0.05	0.05
1999		0.025	0.14	0.207	0.45	0.71	0.188	30	0.05	0.07
1998		0.025	0.18	0.202	0.37	1.0	0.200	30	0.05	0.06
1997		0.025	0.17	0.215	0.43	0.53	0.159	30	0.05	0.07
1996		0.025	0.16	0.227	0.46	1.3	0.261	24	0.05	0.07
1995		0.025	0.19	0.241	0.50	0.60	0.170	24	0.05	0.08
1994		0.08	0.48	*	1.07	1.4	0.398	14	0.05	*
1993		0.025	0.34	0.376	0.69	1.1	0.293	24	0.05	0.1
1992		0.05	0.26	0.385	0.83	1.4	0.342	24	0.05	0.1
1991		0.025	0.25	0.371	0.73	1.3	0.340	24	0.05	0.1
1990		0.05	0.30	0.536	1.24	2.8	0.660	24	0.05	0.2
1989		0.025	0.22	*	1.6	2.4	0.675	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.