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	Annual Toxics Summary Stockton-Hazelton 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		0.025	*	*	*	0.33	0.128	5	0.05	*
2004		0.025	0.025	0.086	0.18	0.58	0.134	30	0.05	0.3
2003		0.025	0.025	0.126	0.40	0.71	0.188	31	0.05	0.4
2002		0.025	0.025	0.139	0.42	0.78	0.190	30	0.05	0.4
2001		0.025	0.025	0.130	0.31	1.1	0.212	31	0.05	0.4
2000		0.025	0.025	0.185	0.52	1.3	0.346	30	0.05	0.6
1999		0.025	0.025	0.171	0.53	1.1	0.270	30	0.05	0.5
1998		0.025	0.05	0.263	0.86	2.2	0.538	31	0.05	0.8
1997		0.025	0.025	0.118	0.30	0.72	0.162	30	0.05	0.4
1996		0.025	0.025	0.111	0.19	0.74	0.189	24	0.05	0.4
1995		0.025	0.07	*	0.61	0.91	0.271	20	0.05	*
1994		0.025	0.29	*	1.0	1.1	0.360	14	0.05	*
1993		0.025	0.08	0.408	1.56	2.0	0.633	23	0.05	1
1992		0.025	0.05	0.225	0.38	1.9	0.437	24	0.05	0.7
1991		0.025	0.06	0.243	0.74	1.6	0.396	24	0.05	0.8
1990		0.025	0.12	0.461	1.05	4.3	0.913	24	0.05	1
1989		0.025	0.025	0.901	1.3	6.5	1.48	23	0.05	3

	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.