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	Annual Toxics Summary Stockton-Hazelton Street 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		0.07	*	*	*	0.50	0.157	5	0.05	*
2004		0.025	0.025	0.131	0.31	0.67	0.173	30	0.05	0.04
2003		0.025	0.11	0.173	0.52	0.81	0.209	31	0.05	0.06
2002		0.025	0.06	0.201	0.47	1.2	0.279	30	0.05	0.06
2001		0.025	0.06	0.204	0.54	1.4	0.289	31	0.05	0.06
2000		0.025	0.06	0.249	0.75	1.5	0.415	30	0.05	0.08
1999		0.025	0.09	0.243	0.78	1.2	0.330	30	0.05	0.08
1998		0.025	0.10	0.378	1.0	2.5	0.636	31	0.05	0.1
1997		0.025	0.07	0.182	0.54	0.82	0.226	30	0.05	0.06
1996		0.025	0.08	0.170	0.42	0.72	0.202	24	0.05	0.05
1995		0.025	0.11	*	0.72	1.1	0.307	20	0.05	*
1994		0.06	0.49	*	1.37	1.4	0.452	14	0.05	*
1993		0.025	0.15	0.543	1.56	2.9	0.756	23	0.05	0.2
1992		0.025	0.15	0.350	0.66	2.7	0.613	24	0.05	0.1
1991		0.025	0.18	0.426	1.2	2.1	0.560	24	0.05	0.1
1990		0.08	*	*	*	4.8	1.52	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.