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	Annual Toxics Summary Riverside-Rubidoux 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		3	*	*	*	9	2.6	5	1
2002		2	10	9.8	13	24	4.0	31	1
2001		1	9	8.6	14	16	3.6	30	2
2000		1	8	7.8	11	17	3.4	29	2
1999		1	10	9.1	15	19	5.3	28	2
1998		4	11	*	16	19	5.2	12	2
1997		7	*	*	*	7	3.5	1	2
1996		2	8	9.6	14	16	3.5	27	2
1995		3	12	11.6	18	28	5.7	30	2
1994		1	13	16.6	20	170	29.3	30	2
1993		3	12	11.9	19	28	6.6	28	2
1992		1	10	10.8	18	25	6.3	30	2
1991		1	10	9.8	16	21	5.0	30	2
1990		2	10	*	17	19	5.9	15	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.