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	Annual Toxics Summary San Francisco-Arkansas Street FAQs Bromine 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		3	*	*	*	13	3.9	6	1
2002		2	8	13.4	31	48	13.2	30	1
2001		2	11	11.7	25	27	7.6	31	2
2000		1	7	*	17	19	5.6	19	2
1999		3	10	*	20	30	7.6	20	2
1998		2	10	12.1	18	42	8.1	26	2
1997		2	8	12.3	26	41	10.4	28	2
1996		3	10	13.4	26	48	10.7	26	2
1995		2	8	9.4	17	22	5.5	30	2
1994		3	12	14.0	26	47	9.5	30	2
1993		1	10	11.4	19	20	5.7	27	2
1992		6	10	*	26	28	7.8	16	2
1991		3	10	*	18	29	6.3	25	2
1990		3	10	*	23	39	10.0	14	2
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.