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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		*	*	*	*	*	*	0	*
2022		*	*	*	*	*	*	0	*
2021		*	*	*	*	*	*	0	*
2020		*	*	*	*	*	*	0	*
2019		*	*	*	*	*	*	0	*
2018		*	*	*	*	*	*	0	*
2017		*	*	*	*	*	*	0	*
2016		*	*	*	*	*	*	0	*
2015		*	*	*	*	*	*	0	*
2014		*	*	*	*	*	*	0	*
2013		*	*	*	*	*	*	0	*
2012		*	*	*	*	*	*	0	*
2011		*	*	*	*	*	*	0	*
2010		*	*	*	*	*	*	0	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		35	*	*	*	56	10.0	4	19
2002		9.5	46	*	82	91	23.4	27	19
2001		12.5	47	48.4	73	150	31.2	28	25
2000		12.5	43	*	88	420	74.8	29	25
1999		12.5	41	51.2	110	210	47.2	26	25
1998		12.5	34	36.0	57	83	19.0	29	25
1997		12.5	40	47.3	85	130	28.3	30	25
1996		12.5	44	*	92	210	41.0	23	25
1995		12.5	41	45.6	69	120	23.9	29	25
1994		12.5	43	48.3	81	140	27.1	29	25
1993		12.5	48	52.2	83	140	33.1	30	25
1992		12.5	41	46.2	84	200	38.6	30	25
1991		12.5	26	35.3	60	170	32.4	28	25
1990		12.5	37	*	87	160	40.8	16	25
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.