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	Annual Toxics Summary Richmond-13th Street FAQs Benzo(g,h,i)perylene-10 nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		*	*	*	*	*	*	0	*
2002		*	*	*	*	*	*	0	*
2001		*	*	*	*	*	*	0	*
2000		*	*	*	*	*	*	0	*
1999		*	*	*	*	*	*	0	*
1998		*	*	*	*	*	*	0	*
1997		0.14	*	*	*	2.0	0.563	10	0.05
1996		0.07	0.22	0.378	0.79	1.9	0.455	24	0.05
1995		0.07	0.40	0.495	0.97	1.0	0.304	24	0.05
1994		0.16	0.78	*	1.98	2.6	0.730	14	0.05
1993		0.08	0.56	0.880	1.94	3.1	0.821	24	0.05
1992		0.08	0.47	0.667	1.65	2.2	0.605	24	0.05
1991		0.13	0.25	0.595	1.47	2.9	0.713	24	0.05
1990		0.22	*	*	*	1.6	0.428	8	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.