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	Annual Toxics Summary North Long Beach FAQs Tin nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		*	*	*	*	*	*	0	*
2023		*	*	*	*	*	*	0	*
2022		*	*	*	*	*	*	0	*
2021		*	*	*	*	*	*	0	*
2020		*	*	*	*	*	*	0	*
2019		*	*	*	*	*	*	0	*
2018		*	*	*	*	*	*	0	*
2017		*	*	*	*	*	*	0	*
2016		*	*	*	*	*	*	0	*
2015		*	*	*	*	*	*	0	*
2014		*	*	*	*	*	*	0	*
2013		0.8	0.8	*	2.2	5.4	1.34	20	1.6
2012		1.5	1.5	*	1.5	5.9	0.99	24	3.0
2011		1.5	*	*	*	3.7	1.13	5	3.0
2010		1.5	1.5	1.58	1.5	3.5	0.41	24	3.0
2009		1.5	1.5	2.01	4.0	5.0	1.06	29	3.0
2008		*	*	*	*	*	*	0	*
2007		0.75	0.75	*	2.5	7.2	1.72	14	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		2.5	*	*	*	2.5	0.00	4	5.0
2002		2	2	*	7.4	10	2.43	27	4.0
2001		2	2	4.97	14.5	29	7.39	28	4.0
2000		2	2	*	7.0	23	4.39	29	4.0
1999		2	2	5.61	14	26	6.84	26	4.0
1998		2	2	3.84	8.0	24	4.43	29	4.0
1997		2	2	5.44	15.1	25	5.99	30	4.0
1996		2	2	*	12.8	19	5.42	23	4.0
1995		2	2	5.86	19.2	21	6.80	29	4.0
1994		2	2	7.71	22.2	31	9.12	29	4.0
1993		2	4.5	8.40	20.1	29	8.29	30	4.0
1992		2	*	*	*	20	6.38	10	4.0
1991		*	*	*	*	*	*	0	*
1990		*	*	*	*	*	*	0	*
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.