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	Annual Toxics Summary North Long Beach 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	0.107	0.31	0.61	0.149	31	0.05	0.3
2003		0.025	0.025	0.070	0.13	0.36	0.076	31	0.05	0.2
2002		0.025	0.025	0.077	0.21	0.35	0.091	31	0.05	0.2
2001		0.025	0.025	0.130	0.39	0.92	0.203	28	0.05	0.4
2000		0.025	0.025	0.126	0.38	0.85	0.188	31	0.05	0.4
1999		0.025	0.025	0.129	0.30	0.61	0.159	30	0.05	0.4
1998		0.025	0.06	0.168	0.41	1.6	0.306	30	0.05	0.5
1997		0.025	0.06	0.173	0.39	1.0	0.218	31	0.05	0.5
1996		0.025	0.025	*	0.29	0.43	0.127	20	0.05	*
1995		0.025	0.08	0.118	0.26	0.69	0.153	24	0.05	0.4
1994		0.025	0.13	*	0.52	0.72	0.217	14	0.05	*
1993		0.025	0.10	0.243	0.67	1.1	0.294	24	0.05	0.8
1992		0.025	0.05	0.280	0.58	1.8	0.439	24	0.05	0.9
1991		0.025	0.09	*	0.34	1.4	0.337	19	0.05	*
1990		0.025	0.10	0.278	0.83	1.5	0.368	24	0.05	0.9
1989		0.025	0.11	0.429	1.3	2.2	0.614	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.