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	Annual Toxics Summary Burbank-W Palm Avenue FAQs Copper 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		9.1	28.5	*	75.1	82	23.9	12	6.1
2013		12	46	*	85.5	170	34.5	26	1.5
2012		11	31	*	61.2	350	67.9	23	1.5
2011		3.2	32	*	48.2	68	14.6	19	1.5
2010		5.7	22	*	54	57	15.4	23	1.5
2009		11	37	*	56.8	82	17.4	25	1.5
2008		*	*	*	*	*	*	0	*
2007		15	39.5	*	75.5	89	20.9	26	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		62	*	*	*	110	19.6	5	1.0
2002		17	63.5	66.3	100	120	28.7	30	1.0
2001		20	47.5	*	110	170	35.1	28	2.0
2000		21	55	68.4	100	230	43.8	31	2.0
1999		11	42	*	94.4	110	29.9	25	2.0
1998		10	44	49.4	83.2	120	25.8	29	2.0
1997		12	34	*	65.6	98	21.8	29	2.0
1996		14	33	*	51.4	81	15.1	23	2.0
1995		7.0	46	49.4	80	140	27.4	31	2.0
1994		12	43	*	81.4	120	26.3	27	2.0
1993		12	35	42.0	76	110	25.0	31	2.0
1992		18	45	75.5	91	940	161	31	2.0
1991		15	51	61.6	95.1	120	28.5	28	2.0
1990		34	68	*	120	140	29.0	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.