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	Annual Toxics Summary Chula Vista 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		0.11	*	*	*	0.26	0.059	5	0.05
2004		0.025	0.07	0.153	0.33	0.93	0.190	31	0.05
2003		0.025	0.08	0.161	0.37	0.55	0.154	31	0.05
2002		0.025	0.11	0.174	0.46	0.65	0.181	30	0.05
2001		0.025	0.025	0.171	0.52	0.88	0.236	30	0.05
2000		0.025	0.07	0.248	0.69	1.0	0.296	29	0.05
1999		0.025	0.23	*	0.82	1.0	0.320	24	0.05
1998		0.025	0.10	0.230	0.53	1.5	0.306	30	0.05
1997		0.025	0.11	0.295	0.84	1.2	0.337	31	0.05
1996		0.025	0.10	0.247	0.63	1.3	0.313	24	0.05
1995		0.025	0.21	0.282	0.63	1.2	0.291	24	0.05
1994		0.14	0.54	*	1.1	1.5	0.419	14	0.05
1993		0.025	0.22	0.343	0.91	1.2	0.349	24	0.05
1992		0.025	0.11	0.309	0.75	1.4	0.376	24	0.05
1991		0.025	0.20	0.372	1.11	1.6	0.443	24	0.05
1990		0.07	*	*	*	1.3	0.405	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.