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	Annual Toxics Summary San Jose-4th Street FAQs Titanium 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		38	*	*	*	110	23.7	10	10
2001		19	81	97.7	170	260	61.9	30	10
2000		16	77	164	130	2900	534	28	10
1999		33	77	89.0	140	310	52.7	30	10
1998		16	62	71.9	130	220	49.5	29	10
1997		5	60	73.6	120	150	37.0	30	10
1996		12	71	69.0	120	130	36.2	28	10
1995		5	74	83.5	160	250	65.8	30	10
1994		5	85	85.4	140	220	46.5	31	10
1993		12	97	97.4	150	280	55.6	29	10
1992		24	96	102	160	340	59.2	30	10
1991		21	94	124	220	370	79.0	28	10
1990		53	120	*	170	320	61.3	15	10
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.