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	Annual Toxics Summary Fresno-1st Street FAQs Chromium 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		1.5	3	*	5	6	1.6	29	3
2010		1.5	4	3.8	7	9	2.4	29	3
2009		1.5	1.5	2.4	4	6	1.2	33	3
2008		*	*	*	*	*	*	0	*
2007		1.5	4	*	6	11	2.5	25	3
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		1	*	*	*	6	1.9	7	2
2002		1	3	4.0	7	11	2.7	29	2
2001		1	3	3.5	7	12	2.6	32	2
2000		1	3	3.5	7	8	2.4	29	2
1999		1	4	*	8	20	4.1	25	2
1998		1	2	3.4	8	10	2.6	26	2
1997		1	3	3.9	7	15	3.0	30	2
1996		1	2	3.0	6	8	2.5	29	2
1995		1	3	3.5	8	12	3.3	31	2
1994		1	4	*	6	9	2.2	25	2
1993		1	4	4.4	8	14	3.3	29	2
1992		1	4	4.2	8	11	3.0	31	2
1991		1	4	*	9	10	3.2	25	2
1990		1	4	*	11	17	3.9	26	1
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.