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	Annual Toxics Summary Stockton-Hazelton 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		0.08	*	*	*	0.42	0.133	5	0.05	*
2004		0.025	0.06	0.145	0.34	0.83	0.213	30	0.05	0.05
2003		0.025	0.09	0.158	0.38	0.79	0.198	31	0.05	0.05
2002		0.025	0.06	0.186	0.52	1.0	0.246	30	0.05	0.06
2001		0.025	0.06	0.183	0.39	1.3	0.269	31	0.05	0.06
2000		0.025	0.025	0.222	0.66	1.5	0.387	30	0.05	0.07
1999		0.025	0.09	0.221	0.67	1.4	0.327	30	0.05	0.07
1998		0.025	0.08	0.329	0.81	2.4	0.597	31	0.05	0.1
1997		0.025	0.06	0.169	0.49	1.1	0.239	30	0.05	0.05
1996		0.025	0.06	0.134	0.31	0.68	0.165	24	0.05	0.04
1995		0.025	0.11	*	0.68	1.2	0.333	20	0.05	*
1994		0.05	0.44	*	1.17	1.7	0.471	14	0.05	*
1993		0.025	0.12	0.529	1.38	2.8	0.739	23	0.05	0.2
1992		0.025	0.09	0.273	0.48	2.1	0.497	24	0.05	0.09
1991		0.025	0.10	0.315	0.95	1.7	0.428	24	0.05	0.1
1990		0.025	0.21	0.606	1.61	4.0	0.996	24	0.05	0.2
1989		0.025	0.11	*	0.99	6.0	1.40	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.