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	Annual Toxics Summary Los Angeles-North Main Street FAQs Titanium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		6	24	*	44	51	13.8	12	0.5
2023		20	43	*	93	131	28.4	24	2.69
2022		1.345	48	50.3	78	99	22.1	27	2.69
2021		18	64	*	94	138	29.0	22	2.69
2020		19	*	*	*	81	18.7	7	2.69
2019		1.345	47	*	89	125	32.3	29	2.69
2018		12	53	63.4	97	113	28.2	28	2.69
2017		9	45	58.7	110	134	33.6	30	2.69
2016		9	44	47.9	86	128	27.4	31	2.69
2015		10	35	45.1	72	154	28.5	30	2.69
2014		18	39	43.7	71	100	21.8	29	1.9
2013		15	37	*	73	140	25.9	25	1.5
2012		4.5	29	*	52	59	16.0	22	9
2011		4.5	27	*	42	68	15.2	13	9
2010		4.5	24	*	44	62	14.8	18	9
2009		4.5	28	31.3	51	83	20.9	30	9
2008		23	140	141	220	320	67.4	28	1
2007		12	29	*	43	82	14.1	29	9
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		58	*	*	*	190	50.2	5	3
2002		57	150	159	220	270	58.7	29	3
2001		15	120	*	160	240	53.3	22	10
2000		5	110	101	170	190	50.0	31	10
1999		21	120	131	240	290	65.2	30	10
1998		5	110	*	170	210	55.5	26	10
1997		5	100	*	190	340	75.1	17	10
1996		19	140	133	210	430	82.9	29	10
1995		18	130	126	230	270	73.0	28	10
1994		21	140	163	300	380	90.0	28	10
1993		27	130	*	220	230	63.1	23	10
1992		5	160	*	220	290	67.0	21	10
1991		52	170	177	290	340	79.3	28	10
1990		45	210	*	440	610	144	17	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.