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	Annual Toxics Summary San Jose-4th Street FAQs Zinc nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
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	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		*	*	*	*	*	*	0	*
2002		28	*	*	*	99	24.9	10	2
2001		12	44	45.6	72	130	25.6	30	2
2000		11	41	56.1	91	370	69.0	28	2
1999		21	37	43.2	71	86	18.6	30	2
1998		14	36	44.1	100	130	29.7	29	2
1997		13	37	44.5	74	120	23.3	30	2
1996		8	44	42.2	68	88	19.6	28	2
1995		9	41	45.1	94	110	30.2	30	2
1994		11	48	51.9	79	170	34.7	31	2
1993		13	50	59.8	120	150	35.9	29	2
1992		17	53	55.5	100	120	26.8	30	2
1991		11	46	55.6	100	140	33.3	28	2
1990		16	61	*	87	120	27.8	15	2
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.