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	Annual Toxics Summary Stockton-Hazelton Street 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		6.9	31.4	*	54.1	78.9	19.5	15	1.3
2020		3.3	*	*	*	75.9	23.8	7	1.3
2019		3.6	17.1	24.5	54.8	115	26.8	30	1.3
2018		4.1	19.7	28.0	52.7	121	25.7	32	1.3
2017		4.9	22.7	26.9	44.7	119	21.7	32	1.3
2016		2.5	18.5	22.1	29.4	74.8	14.9	32	1.3
2015		5.2	25.1	27.8	43.2	73.9	15.3	31	1.3
2014		0.85	19	25.2	46	83	18.8	31	1.7
2013		8.9	22.5	*	56.1	71	18.2	30	1.0
2012		0.75	17	17.8	31.1	52	11.1	30	1.5
2011		2.1	14	16.4	38	49	12.6	31	1.5
2010		3.4	8.9	*	27.6	46	10.9	27	1.5
2009		0.75	12.5	13.2	25	32	7.94	32	1.5
2008		4.9	20	26.4	64.2	77	20.4	33	1.0
2007		3.3	22	23.5	41.4	56	13.7	37	1.5
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		9.0	*	*	*	32	8.64	5	1.0
2002		1.0	28	26.8	42.4	87	16.3	35	1.0
2001		6.0	19	24.8	39.6	100	18.6	35	2.0
2000		3.0	21	27.1	48.8	100	19.3	33	2.0
1999		5.0	23	25.7	40	150	25.1	31	2.0
1998		4.0	21	26.1	41	120	22.7	31	2.0
1997		5.0	25	28.6	50.4	93	18.3	29	2.0
1996		5.0	24.5	24.2	37.9	56	13.3	32	2.0
1995		7.0	20	*	59	110	25.5	27	2.0
1994		4.0	26.5	27.1	39.7	68	15.3	34	2.0
1993		5.0	26	33.0	63	130	24.6	31	2.0
1992		4.0	28	29.3	47.1	64	16.0	30	2.0
1991		10	36	42.9	72	110	24.1	31	2.0
1990		5.0	30.5	37.2	74.1	110	25.8	32	1.0
1989		2.0	29.5	35.3	76.1	133	27.6	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.