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	Annual Toxics Summary San Jose-Jackson Street FAQs Chromium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2023		4.255	4.255	*	4.255	10	1.4	16	8.51
2022		4.255	4.255	5.5	10	11	2.5	33	8.51
2021		4.255	4.255	*	9	12	2.6	25	8.51
2020		4.255	*	*	*	15	4.0	9	8.51
2019		4.255	4.255	*	11	14	3.1	27	8.51
2018		4.255	9	7.5	11	16	3.4	29	8.51
2017		4.255	4.255	6.2	11	14	3.3	30	8.51
2016		4.255	4.255	4.5	4.255	9	0.9	31	8.51
2015		4.255	4.255	4.6	4.255	10	1.3	30	8.51
2014		3.4	3.4	4.7	8	20	3.5	29	6.8
2013		4	4	*	4	9	1.0	29	3
2012		1.5	4	3.9	6	7	1.9	30	3
2011		1.5	4	3.3	6	6	1.7	26	3
2010		1.5	4	3.5	6	6	1.7	30	3
2009		1.5	1.5	2.5	4	5	1.2	29	3
2008		*	*	*	*	*	*	0	*
2007		1.5	1.5	*	4	6	1.5	23	3
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		1	*	*	*	9	3.0	5	2
2002		1	*	*	*	8	2.7	6	2
2001		*	*	*	*	*	*	0	*
2000		*	*	*	*	*	*	0	*
1999		*	*	*	*	*	*	0	*
1998		*	*	*	*	*	*	0	*
1997		*	*	*	*	*	*	0	*
1996		*	*	*	*	*	*	0	*
1995		*	*	*	*	*	*	0	*
1994		*	*	*	*	*	*	0	*
1993		*	*	*	*	*	*	0	*
1992		*	*	*	*	*	*	0	*
1991		*	*	*	*	*	*	0	*
1990		*	*	*	*	*	*	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.