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	Annual Toxics Summary Chula Vista FAQs Titanium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		4	15	*	32	43	12.4	13	0.24
2023		5	23	27.3	54	77	17.9	31	2.69
2022		5	22	24.9	46	56	13.6	31	2.69
2021		5	23	*	46	72	16.2	23	2.69
2020		6	*	*	*	54	15.7	8	2.69
2019		1.345	17	21.5	34	73	17.4	30	2.69
2018		7	29	28.9	47	58	13.4	31	2.69
2017		3	20	30.5	72	90	25.7	30	2.69
2016		6	31	*	66	108	23.5	27	2.69
2015		5	22	28.9	64	86	20.2	30	2.69
2014		7	21	25.2	47	89	18.2	31	1.9
2013		5	18	*	39	59	13.8	28	1.5
2012		4.5	11	12.4	25	40	9.8	28	9
2011		4.5	9	*	20	25	6.8	23	9
2010		4.5	4.5	7.8	13	26	5.2	28	9
2009		4.5	15	18.2	27	91	16.3	30	9
2008		15	57	65.7	120	190	42.7	30	1
2007		4.5	17	21.7	39	57	14.3	30	9
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		11	*	*	*	110	41.5	5	3
2002		19	63	71.5	120	240	44.3	30	3
2001		16	50	57.0	87	130	26.6	28	10
2000		23	56	*	90	140	34.0	11	10
1999		5	58	*	80	170	37.4	17	10
1998		12	55	61.0	100	120	31.0	27	10
1997		5	69	70.6	110	180	39.0	29	10
1996		5	41	49.1	90	120	30.3	30	10
1995		5	61	64.0	100	140	31.8	29	10
1994		12	65	67.4	93	170	32.6	30	10
1993		5	52	67.8	120	170	42.9	27	10
1992		12	54	56.5	110	120	30.6	28	10
1991		12	52	58.3	89	110	25.2	29	10
1990		34	75	*	190	200	56.3	16	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.