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	Annual Toxics Summary Riverside-Rubidoux 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		0.025	0.16	0.235	0.52	0.68	0.190	31	0.05
2003		0.025	0.10	0.227	0.61	0.77	0.230	31	0.05
2002		0.025	0.20	0.312	0.76	1.1	0.307	31	0.05
2001		0.025	0.13	0.265	0.74	1.1	0.307	30	0.05
2000		0.025	0.21	0.351	0.72	1.8	0.416	31	0.05
1999		0.025	0.17	0.305	0.77	1.3	0.354	30	0.05
1998		0.025	0.25	0.462	1.02	2.4	0.553	29	0.05
1997		0.025	0.22	*	0.89	1.4	0.350	29	0.05
1996		0.025	0.34	0.483	1.07	2.0	0.475	24	0.05
1995		0.025	0.39	*	1.22	2.1	0.542	20	0.05
1994		0.12	1.0	*	1.64	2.0	0.573	14	0.05
1993		0.05	0.43	0.733	1.7	3.3	0.794	24	0.05
1992		0.025	0.25	0.568	1.14	3.5	0.753	24	0.05
1991		0.025	0.28	0.621	1.54	2.7	0.705	24	0.05
1990		0.16	*	*	*	1.6	0.473	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.