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	Annual Toxics Summary Roseville-N Sunrise Blvd FAQs Iron nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
2024		76	450	531	980	1350	344	29	1
2023		34.7	510	*	1000	1380	414	24	69.4
2022		214	610	685	970	1980	365	30	69.4
2021		124	860	*	1900	2250	621	23	69.4
2020		101	*	*	*	1000	352	7	69.4
2019		34.7	370	509	1000	1880	442	30	69.4
2018		34.7	520	622	1400	1770	483	31	69.4
2017		34.7	490	694	1300	2980	683	29	69.4
2016		34.7	620	622	1000	1490	358	31	69.4
2015		80	740	806	1100	3090	542	28	69.4
2014		27.5	670	655	1200	1400	394	30	55
2013		210	640	*	1300	3400	619	28	30
2012		53	370	370	640	990	235	28	30
2011		49	310	383	730	1300	283	30	30
2010		15	240	*	490	550	145	17	30
2009		73	300	494	930	1900	408	31	30
2008		70	880	*	1700	2600	649	25	1
2007		180	550	510	760	1000	219	29	30
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		300	*	*	*	810	191	5	1
2002		110	740	869	1400	2300	489	30	1
2001		95	730	819	1600	1800	536	31	2
2000		47	500	753	1500	2100	528	28	2
1999		150	760	1010	1800	5000	934	29	2
1998		95	520	740	1500	2300	627	29	2
1997		30	730	874	1600	1800	497	29	2
1996		46	560	669	1400	1800	495	31	2
1995		52	580	815	1800	3100	775	30	2
1994		47	740	766	1400	1900	483	30	2
1993		160	780	*	1500	2300	543	24	2
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.