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

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		429	*	*	*	429	1310	1	69.4
2024		148	840	1420	3500	4770	1310	28	48
2023		138	1200	1400	2200	3230	788	25	69.4
2022		34.7	1500	*	3300	4850	1390	12	69.4
2021		339	1500	*	3600	4330	1160	17	69.4
2020		85	*	*	*	1990	711	7	69.4
2019		34.7	1200	1240	2700	4710	1240	29	69.4
2018		127	1100	1360	3200	3610	1000	31	69.4
2017		181	1100	1340	2300	4530	980	29	69.4
2016		34.7	990	1230	2500	4010	884	31	69.4
2015		158	1100	1220	2100	3580	826	30	69.4
2014		160	1200	1360	2900	3500	958	30	55
2013		190	1100	*	2300	3000	740	30	30
2012		120	590	683	1700	2400	597	29	30
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.