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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		*	*	*	*	*	*	0	*
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		690	*	*	*	2300	742	4	4
2002		350	870	*	1600	2300	464	27	4
2001		250	910	912	1400	1900	427	28	3
2000		350	900	*	1500	4500	774	29	3
1999		310	880	1110	2200	4700	968	26	3
1998		230	670	813	1300	1700	384	29	3
1997		92	930	1060	1800	2300	539	30	3
1996		340	1000	*	1500	3900	737	23	3
1995		150	960	1060	1700	2400	489	29	3
1994		280	940	1100	1600	2600	551	29	3
1993		150	990	1160	1600	6700	1140	30	3
1992		210	1100	1140	1800	2900	604	30	3
1991		450	1100	1140	1700	2700	523	28	3
1990		450	1500	*	2900	4100	971	16	3
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.