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	Annual Toxics Summary Burbank-W Palm Avenue FAQs Selenium 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		1.35	1.35	*	1.35	4.4	0.88	12	2.7
2013		0.75	0.75	*	1.9	2.3	0.51	26	1.5
2012		0.75	0.75	1.21	2.7	3.1	0.80	29	1.5
2011		0.75	0.75	*	1.7	3.8	0.75	21	1.5
2010		0.75	0.75	0.94	1.8	2.3	0.44	29	1.5
2009		0.75	0.75	0.75	0.75	0.75	0.00	30	1.5
2008		*	*	*	*	*	*	0	*
2007		0.75	0.75	0.87	1.6	2.3	0.48	24	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		1	*	*	*	1	0.00	5	2.0
2002		1	1	1.00	1	1	0.00	30	2.0
2001		1	1	*	1	2.0	0.31	28	2.0
2000		1	1	1.21	2.0	3.0	0.50	31	2.0
1999		1	1	*	2.0	3.0	0.61	25	2.0
1998		1	1	1.14	1	3.0	0.52	29	2.0
1997		1	1	*	2.0	4.0	0.65	29	2.0
1996		1	1	*	3.8	6.0	1.33	23	2.0
1995		1	1	1.28	1	5.0	0.89	31	2.0
1994		1	1	*	4.4	5.0	1.38	27	2.0
1993		1	1	1.65	3.0	5.0	0.99	31	2.0
1992		1	1	2.44	5.0	9.0	2.16	31	2.0
1991		1	1	1.67	3.0	6.0	1.15	28	2.0
1990		1	1	*	2.6	5.0	1.13	15	2.0
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.