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	Annual Toxics Summary Fresno-1st 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		0.13	*	*	*	0.63	0.198	5	0.05	*
2004		0.025	0.025	0.210	0.63	2.0	0.415	30	0.05	0.7
2003		0.025	0.025	0.414	1.2	2.9	0.795	31	0.05	1
2002		0.025	0.025	0.466	1.52	2.7	0.729	30	0.05	1
2001		0.025	0.11	0.501	1.0	4.3	1.10	31	0.05	2
2000		0.025	0.025	0.491	1.15	4.6	1.08	30	0.05	2
1999		0.025	0.025	0.533	2.02	4.1	1.10	30	0.05	2
1998		0.025	0.06	0.618	2.4	4.3	1.18	31	0.05	2
1997		0.025	0.06	0.562	1.59	4.6	1.04	30	0.05	2
1996		0.025	0.025	0.515	2.6	3.0	1.02	24	0.05	2
1995		0.025	0.10	0.533	1.21	3.6	0.964	24	0.05	2
1994		0.025	0.51	*	2.61	5.5	1.50	14	0.05	*
1993		0.025	0.10	1.24	4.17	6.2	1.93	24	0.05	4
1992		0.025	0.08	0.624	2.19	4.7	1.18	24	0.05	2
1991		0.025	0.18	0.885	3.81	4.8	1.53	24	0.05	3
1990		0.025	0.07	*	1.52	23	5.38	18	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.