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	Annual Toxics Summary Calexico-Ethel Street FAQs Titanium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2017		15	66	71.4	130	187	44.2	30	2.69
2016		15	70	81.6	140	236	48.5	29	2.69
2015		19	73	83.0	150	176	43.9	30	2.69
2014		11	49	65.3	120	180	41.6	28	1.9
2013		5	43	*	74	110	24.4	27	1.5
2012		4.5	18	24.1	41	65	15.1	27	9
2011		4.5	23	*	33	51	12.0	25	9
2010		4.5	20	24.0	41	52	12.1	28	9
2009		4.5	23	21.3	42	49	14.2	31	9
2008		61	140	147	250	300	66.6	30	1
2007		9	32	36.7	62	79	18.7	28	9
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		130	*	*	*	350	87.9	5	3
2002		50	220	230	360	480	112	29	3
2001		23	200	190	310	320	84.1	30	10
2000		67	210	*	360	420	95.5	29	10
1999		61	190	193	370	470	104	27	10
1998		100	170	208	340	630	113	27	10
1997		65	230	*	410	560	130	24	10
1996		77	190	198	300	440	94.1	28	10
1995		58	290	*	410	560	148	15	10
1994		*	*	*	*	*	*	0	*
1993		*	*	*	*	*	*	0	*
1992		*	*	*	*	*	*	0	*
1991		*	*	*	*	*	*	0	*
1990		*	*	*	*	*	*	0	*
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.