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	Annual Toxics Summary Chula Vista FAQs Indeno(1,2,3-cd)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		0.025	*	*	*	0.24	0.093	5	0.05	*
2004		0.025	0.06	0.094	0.23	0.44	0.100	31	0.05	0.03
2003		0.025	0.025	0.113	0.22	0.51	0.122	31	0.05	0.04
2002		0.025	0.025	0.130	0.33	0.55	0.152	30	0.05	0.04
2001		0.025	0.025	0.147	0.43	0.66	0.185	30	0.05	0.05
2000		0.025	0.025	0.162	0.48	0.60	0.188	29	0.05	0.05
1999		0.025	0.13	*	0.47	0.78	0.210	24	0.05	*
1998		0.025	0.025	0.148	0.33	1.2	0.234	30	0.05	0.05
1997		0.025	0.06	0.138	0.35	0.56	0.162	31	0.05	0.04
1996		0.025	0.07	0.138	0.31	0.77	0.171	24	0.05	0.04
1995		0.025	0.11	0.165	0.46	0.62	0.176	24	0.05	0.05
1994		0.07	0.30	*	0.70	0.73	0.240	14	0.05	*
1993		0.025	0.12	0.180	0.42	0.73	0.192	24	0.05	0.06
1992		0.025	0.06	0.190	0.47	0.89	0.249	24	0.05	0.06
1991		0.025	0.11	0.297	0.69	1.4	0.386	24	0.05	0.09
1990		0.08	*	*	*	1.2	0.370	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.