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	Annual Toxics Summary Modesto-I Street (Courthouse) 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	*	*
2003		*	*	*	*	*	*	0	*	*
2002		*	*	*	*	*	*	0	*	*
2001		*	*	*	*	*	*	0	*	*
2000		*	*	*	*	*	*	0	*	*
1999		*	*	*	*	*	*	0	*	*
1998		0.025	0.025	*	0.33	0.44	0.136	20	0.05	*
1997		0.025	0.025	0.205	0.41	2.2	0.412	30	0.05	0.7
1996		0.025	0.025	0.143	0.51	0.61	0.200	24	0.05	0.5
1995		0.025	0.06	0.226	0.70	1.2	0.339	24	0.05	0.7
1994		0.025	0.29	*	1.06	2.6	0.686	14	0.05	*
1993		0.025	0.08	0.496	1.45	4.6	1.01	24	0.05	2
1992		0.025	0.07	0.269	0.49	2.6	0.576	24	0.05	0.9
1991		0.025	0.06	0.370	1.31	2.6	0.685	24	0.05	1
1990		0.025	0.025	*	0.57	4.7	1.12	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.