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	Annual Toxics Summary North Long Beach 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	0.06	0.116	0.30	0.51	0.132	31	0.05	0.04
2003		0.025	0.025	0.086	0.16	0.30	0.077	31	0.05	0.03
2002		0.025	0.08	0.121	0.35	0.43	0.124	31	0.05	0.04
2001		0.025	0.025	0.153	0.37	1.1	0.230	28	0.05	0.05
2000		0.025	0.025	0.140	0.41	0.84	0.194	31	0.05	0.04
1999		0.025	0.10	0.189	0.47	0.75	0.203	30	0.05	0.06
1998		0.025	0.09	0.190	0.50	1.6	0.307	30	0.05	0.06
1997		0.025	0.10	0.208	0.50	0.79	0.209	31	0.05	0.07
1996		0.025	0.06	*	0.33	0.59	0.158	20	0.05	*
1995		0.025	0.10	0.184	0.41	0.71	0.191	24	0.05	0.06
1994		0.05	0.30	*	0.72	1.4	0.362	14	0.05	*
1993		0.025	0.18	0.331	0.80	1.2	0.334	24	0.05	0.1
1992		0.025	0.10	0.393	1.14	1.9	0.521	24	0.05	0.1
1991		0.025	0.20	*	0.51	1.4	0.327	19	0.05	*
1990		0.06	0.21	0.476	1.31	2.0	0.534	24	0.05	0.2
1989		0.025	0.18	*	0.95	3.0	0.731	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.