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	Annual Toxics Summary North Long Beach 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		10	30	*	45	87	18.2	20	1.5
2012		4.5	18	21.5	37	65	15.3	28	9
2011		4.5	18	*	34	50	12.3	27	9
2010		4.5	18	18.7	35	85	16.7	25	9
2009		4.5	20	25.9	62	83	20.8	29	9
2008		17	100	108	180	400	77.3	29	1
2007		4.5	26	31.4	50	81	17.7	28	9
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		63	*	*	*	140	35.9	4	3
2002		37	82	*	150	200	42.0	27	3
2001		19	93	98.3	160	260	56.4	28	10
2000		34	87	*	180	460	84.4	29	10
1999		29	90	116	230	450	104	26	10
1998		5	63	84.0	170	190	50.8	29	10
1997		13	120	122	200	370	77.9	30	10
1996		36	110	*	190	750	146	23	10
1995		17	110	132	220	370	86.1	29	10
1994		25	110	123	200	290	61.8	29	10
1993		5	100	123	190	440	86.6	30	10
1992		21	130	139	210	450	80.6	30	10
1991		41	130	142	200	380	73.2	28	10
1990		62	150	*	350	460	112	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.