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	Annual Toxics Summary San Jose-Jackson Street FAQs Iron nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		34.7	420	*	730	971	258	16	69.4
2024		189	510	623	1200	1510	353	30	32
2023		34.7	540	*	1100	1890	444	26	69.4
2022		34.7	600	692	1200	1800	401	33	69.4
2021		149	570	*	1300	1630	420	25	69.4
2020		159	*	*	*	2080	792	9	69.4
2019		34.7	570	721	1400	3040	714	29	69.4
2018		34.7	640	764	1600	2280	547	29	69.4
2017		129	690	888	1800	3320	717	30	69.4
2016		84	680	719	1100	1670	360	31	69.4
2015		200	710	808	1400	1650	401	30	69.4
2014		120	670	788	1200	2300	472	29	55
2013		120	610	*	1300	1800	469	29	30
2012		65	320	419	900	1000	277	30	30
2011		77	350	391	830	1000	275	27	30
2010		56	320	443	860	1100	262	29	30
2009		75	290	337	730	840	220	29	30
2008		74	490	624	960	1900	407	27	1
2007		190	490	561	1100	1400	345	29	30
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		400	*	*	*	1800	497	5	1
2002		410	*	*	*	1400	448	6	1
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.