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	Annual Toxics Summary Fremont-Chapel Way FAQs Manganese nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		*	*	*	*	*	*	0	*
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	*
2010		0.75	5.1	*	8.6	10	2.68	17	1.5
2009		0.75	5.7	7.33	15	20	5.11	31	1.5
2008		1.9	8.4	9.98	22	34	7.43	30	1.0
2007		0.75	9.3	11.4	18.8	42	8.39	29	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		6.0	*	*	*	14	3.39	5	1.0
2002		3.0	14	*	23.4	28	7.35	24	1.0
2001		1	12	*	19.8	26	6.37	27	2.0
2000		3.0	10.5	14.1	28.2	41	10.0	28	2.0
1999		2.0	14.5	15.0	24.2	67	12.3	28	2.0
1998		4.0	10	16.5	30	110	21.2	25	2.0
1997		1	8.0	*	23.5	48	9.77	28	2.0
1996		1	8.0	11.1	23.2	29	8.24	30	2.0
1995		1	10.5	13.0	27.3	43	10.3	30	2.0
1994		2.0	11	12.1	24.4	30	7.77	29	2.0
1993		3.0	9.0	14.3	31	45	11.3	29	2.0
1992		1	10	11.3	19	22	5.62	31	2.0
1991		3.0	13	17.7	30.6	60	12.9	29	2.0
1990		3.0	11	15.1	26.2	49	10.7	29	1.0
1989		3.0	14.5	15.9	25.4	50	8.98	60	1.0

	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.