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	Annual Toxics Summary North Long Beach FAQs Dibenz(a,h)anthracene-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	*	*
2004		0.025	0.025	0.032	0.025	0.18	0.028	31	0.05	0.1
2003		0.025	0.025	0.026	0.025	0.05	0.004	31	0.05	0.09
2002		0.025	0.025	0.027	0.025	0.07	0.010	31	0.05	0.09
2001		0.025	0.025	0.036	0.06	0.12	0.026	28	0.05	0.1
2000		0.025	0.025	0.029	0.025	0.13	0.020	31	0.05	0.1
1999		0.025	0.025	0.026	0.025	0.07	0.008	30	0.05	0.09
1998		0.025	0.025	0.033	0.05	0.14	0.027	30	0.05	0.1
1997		0.025	0.025	0.028	0.025	0.09	0.012	31	0.05	0.09
1996		0.025	0.025	*	0.025	0.05	0.006	20	0.05	*
1995		0.025	0.025	0.030	0.025	0.11	0.019	24	0.05	0.1
1994		0.025	0.025	*	0.025	0.09	0.018	14	0.05	*
1993		0.025	0.025	0.042	0.07	0.10	0.023	24	0.05	0.1
1992		0.025	0.025	0.046	0.12	0.16	0.044	24	0.05	0.2
1991		0.025	0.025	*	0.025	0.26	0.059	19	0.05	*
1990		0.025	*	*	*	0.44	0.132	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.