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	Annual Toxics Summary Stockton-Hazelton Street FAQs Benzo(k)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		0.025	*	*	*	0.16	0.056	5	0.05	*
2004		0.025	0.025	0.061	0.15	0.34	0.078	30	0.05	0.02
2003		0.025	0.025	0.070	0.17	0.34	0.087	31	0.05	0.02
2002		0.025	0.025	0.086	0.22	0.47	0.106	30	0.05	0.03
2001		0.025	0.025	0.082	0.17	0.53	0.106	31	0.05	0.03
2000		0.025	0.025	0.095	0.25	0.61	0.155	30	0.05	0.03
1999		0.025	0.025	0.089	0.27	0.53	0.128	30	0.05	0.03
1998		0.025	0.025	0.136	0.35	1.0	0.241	31	0.05	0.04
1997		0.025	0.025	0.074	0.19	0.42	0.088	30	0.05	0.02
1996		0.025	0.025	0.057	0.10	0.28	0.063	24	0.05	0.02
1995		0.025	0.025	*	0.28	0.39	0.120	20	0.05	*
1994		0.025	0.15	*	0.47	0.67	0.186	14	0.05	*
1993		0.025	0.05	0.220	0.62	1.2	0.319	23	0.05	0.07
1992		0.025	0.025	0.126	0.23	1.0	0.230	24	0.05	0.04
1991		0.025	0.025	0.115	0.36	0.68	0.167	24	0.05	0.04
1990		0.025	0.08	0.225	0.52	1.8	0.402	24	0.05	0.07
1989		0.025	0.025	*	0.32	1.9	0.441	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.