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	Annual Toxics Summary Burbank-W Palm Avenue FAQs Yttrium 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		1	*	*	*	3	0.9	5	2
2002		1	1	1.8	3	3	0.8	30	2
2001		1	1	*	1	2	0.3	28	2
2000		1	1	1.2	2	3	0.5	31	2
1999		1	1	*	1	3	0.6	25	2
1998		1	1	1.0	1	1	0.0	29	2
1997		1	1	*	1	2	0.3	29	2
1996		1	1	*	3	3	0.8	23	2
1995		1	1	1.1	1	3	0.4	31	2
1994		1	1	*	3	3	0.7	27	2
1993		1	1	1.8	3	4	1.0	31	2
1992		1	1	1.9	3	21	3.7	31	2
1991		1	1	1.2	2	3	0.6	28	2
1990		1	2	*	4	4	1.2	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.