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	Annual Toxics Summary Los Angeles-North Main Street FAQs Aluminum 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		330	*	*	*	2400	769	5	4
2002		650	1800	1750	2400	3000	627	29	4
2001		140	1300	*	1800	2800	602	22	5
2000		100	1300	1200	1800	2800	641	31	5
1999		310	1400	1590	2900	3500	861	30	5
1998		18	1200	*	1800	2500	583	26	5
1997		160	1100	*	1900	3500	769	17	5
1996		78	1600	1290	2100	4200	848	29	5
1995		180	1400	1440	2600	3000	834	28	5
1994		210	1500	1760	3000	4200	986	28	5
1993		180	1500	*	2600	3200	855	23	5
1992		14	1800	*	2700	3100	812	21	5
1991		320	1700	1930	3300	4900	1040	28	5
1990		630	2300	*	5700	6400	1660	17	5
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.