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	Annual Statewide Toxics Summary Titanium FAQs nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2017		1.345	43	58.5	130	278	50.3	407	2.69
2016		1.345	42	62.0	150	323	58.9	424	2.69
2015		1.345	41	58.7	130	537	58.2	418	2.69
2014		0.95	35	53.3	120	440	54.9	398	1.9
2013		3	34	*	100	250	39.2	431	1.5
2012		4.5	17	25.2	60	190	28.2	453	9
2011		4.5	15	22.8	49	200	24.2	412	9
2010		4.5	14	21.1	44	170	22.5	440	9
2009		4.5	15	23.0	54	160	22.8	520	9
2008		6	100	124	250	730	105	503	1
2007		4.5	25	34.2	75	290	31.4	492	9
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		9	66	*	190	350	65.4	86	3
2002		1.5	110	140	270	680	103	491	3
2001		5	95	124	260	1500	114	505	10
2000		5	100	126	240	2900	171	472	10
1999		5	87	117	250	630	105	565	10
1998		5	69	92.7	200	630	86.6	561	10
1997		5	81	101	210	560	85.4	557	10
1996		5	79	102	220	750	89.4	595	10
1995		5	83	115	250	600	104	602	10
1994		5	87	108	220	490	84.0	585	10
1993		5	88	121	250	4200	199	575	10
1992		5	91	118	250	1800	120	554	10
1991		5	100	144	290	1700	134	567	10
1990		13	150	*	350	1100	137	309	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.