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	Annual Toxics Summary Los Angeles-North Main Street FAQs Calcium 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		520	*	*	*	2800	841	5	4
2002		640	1600	1790	2700	3700	769	29	4
2001		150	1100	*	1700	2800	591	22	3
2000		93	1100	995	1500	1900	474	31	3
1999		240	1300	1360	2200	3100	722	30	3
1998		20	1200	*	1800	2200	546	26	3
1997		180	1000	*	2600	3600	913	17	3
1996		120	1300	1260	2000	3800	776	29	3
1995		190	1100	1240	2100	2700	730	28	3
1994		210	1400	1640	2500	4700	930	28	3
1993		270	1300	*	2200	2500	666	23	3
1992		26	1600	*	2200	3000	752	21	3
1991		320	1400	1450	2300	2700	644	28	3
1990		420	1800	*	3000	4700	1030	17	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.