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	Annual Toxics Summary Bakersfield-Chester Avenue 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	*	*
1997		*	*	*	*	*	*	0	*	*
1996		*	*	*	*	*	*	0	*	*
1995		*	*	*	*	*	*	0	*	*
1994		0.11	*	*	*	1.2	0.405	6	0.05	*
1993		0.025	0.19	0.507	1.37	1.7	0.538	24	0.05	2
1992		0.025	0.16	0.500	1.27	4.1	0.912	24	0.05	2
1991		0.025	0.14	0.402	1.24	2.6	0.622	24	0.05	1
1990		0.025	0.25	0.786	1.54	7.3	1.49	24	0.05	2
1989		0.025	0.11	0.863	2.68	6.7	1.59	24	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.