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	Annual Toxics Summary Modesto-I Street (Courthouse) 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	*	*
2004		*	*	*	*	*	*	0	*	*
2003		*	*	*	*	*	*	0	*	*
2002		*	*	*	*	*	*	0	*	*
2001		*	*	*	*	*	*	0	*	*
2000		*	*	*	*	*	*	0	*	*
1999		*	*	*	*	*	*	0	*	*
1998		0.025	0.025	*	0.14	0.20	0.056	20	0.05	*
1997		0.025	0.025	0.123	0.23	1.3	0.239	30	0.05	0.04
1996		0.025	0.025	0.069	0.22	0.26	0.082	24	0.05	0.02
1995		0.025	0.025	0.111	0.32	0.50	0.141	24	0.05	0.04
1994		0.025	0.17	*	0.48	1.4	0.357	14	0.05	*
1993		0.025	0.06	0.257	0.69	2.1	0.467	24	0.05	0.08
1992		0.025	0.025	0.149	0.29	1.2	0.284	24	0.05	0.05
1991		0.025	0.025	0.178	0.62	1.4	0.330	24	0.05	0.06
1990		0.025	0.025	*	0.27	1.8	0.427	17	0.05	*
1989		*	*	*	*	*	*	0	*	*

	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.