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	Annual Toxics Summary Fresno-1st Street FAQs Cobalt nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		*	*	*	*	*	*	0	*
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		0.75	0.75	0.75	0.75	0.75	0.00	31	1.5
2010		0.75	0.75	0.78	0.75	1.5	0.14	29	1.5
2009		0.75	0.75	0.75	0.75	0.75	0.00	33	1.5
2008		*	*	*	*	*	*	0	*
2007		0.75	0.75	1.25	0.75	6.7	1.59	27	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		7.5	*	*	*	7.5	0.00	7	15
2002		7.5	7.5	7.75	7.5	7.5	0.25	29	15
2001		8	8	8.00	8	8	0.00	32	16
2000		8	8	8.00	8	8	0.00	29	16
1999		8	8	*	8	8	0.00	25	16
1998		8	8	8.00	8	8	0.00	26	16
1997		8	8	8.00	8	8	0.00	30	16
1996		8	8	8.00	8	8	0.00	29	16
1995		8	8	8.00	8	8	0.00	31	16
1994		8	8	*	8	17	1.80	25	16
1993		8	8	8.00	8	8	0.00	29	16
1992		8	8	8.00	8	8	0.00	31	16
1991		8	8	*	8	8	0.00	25	16
1990		8	8	*	8	8	0.00	16	16
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.