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	Annual Toxics Summary Fresno-Garland FAQs Zinc nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		5	24	*	57	70	19.7	11	2.7
2023		4.99	36	43.3	69	79	22.1	25	9.98
2022		4.99	38	*	89	113	30.5	12	9.98
2021		15	35	*	68	99	21.9	17	9.98
2020		4.99	*	*	*	196	64.1	7	9.98
2019		4.99	28	55.9	100	459	85.4	29	9.98
2018		4.99	39	*	130	185	48.5	25	9.98
2017		17	49	60.3	99	222	43.0	29	10
2016		5	41	49.8	78	188	34.5	31	10
2015		18	35	52.4	91	170	36.6	30	10
2014		4.2	29	42.8	79	140	32.6	30	8.4
2013		11	28	*	100	120	35.3	25	5.2
2012		10	27	*	57	100	21.2	20	9
2011		*	*	*	*	*	*	0	*
2010		*	*	*	*	*	*	0	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		*	*	*	*	*	*	0	*
2002		*	*	*	*	*	*	0	*
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.