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	Annual Toxics Summary Chico-Manzanita Avenue FAQs Antimony 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		1.5	1.5	*	1.5	1.5	0.0	12	3
2011		1.5	1.5	1.5	1.5	1.5	0.0	31	3
2010		1.5	1.5	1.5	1.5	1.5	0.0	30	3
2009		1.5	1.5	1.6	1.5	6	0.8	30	3
2008		*	*	*	*	*	*	0	*
2007		1.5	1.5	*	1.5	1.5	0.0	13	3
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		3	*	*	*	3	0.0	5	6
2002		2.5	2.5	2.8	2.5	2.5	0.3	31	5
2001		2.5	2.5	2.5	2.5	2.5	0.0	32	5
2000		2.5	2.5	2.8	2.5	8	1.3	31	5
1999		2.5	2.5	2.9	2.5	7	1.1	30	5
1998		2.5	2.5	2.6	2.5	6	0.6	32	5
1997		2.5	2.5	2.6	2.5	5	0.5	30	5
1996		2.5	2.5	2.5	2.5	2.5	0.0	29	5
1995		2.5	2.5	2.5	2.5	2.5	0.0	29	5
1994		2.5	2.5	2.5	2.5	2.5	0.0	30	5
1993		2.5	2.5	2.5	2.5	2.5	0.0	29	5
1992		2.5	*	*	*	2.5	0.0	10	5
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.