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	Annual Toxics Summary Chico-Manzanita Avenue FAQs Bromine 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		0.5	*	*	*	4	1.3	5	1
2002		1	3	3.3	6	14	2.7	31	1
2001		1	3	3.0	5	7	1.7	32	2
2000		1	3	2.5	4	8	1.6	31	2
1999		1	3	3.9	8	11	2.6	30	2
1998		1	3	2.8	5	6	1.4	32	2
1997		1	2	2.6	6	8	2.1	30	2
1996		1	4	3.4	5	7	1.9	29	2
1995		1	4	3.6	6	10	2.3	29	2
1994		1	3	3.2	6	9	2.1	30	2
1993		1	3	2.8	5	7	1.7	29	2
1992		1	3	*	9	18	4.6	16	2
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.