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	Annual Toxics Summary El Cajon-Redwood Avenue FAQs Titanium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		*	*	*	*	*	*	0	*
2023		*	*	*	*	*	*	0	*
2022		*	*	*	*	*	*	0	*
2021		*	*	*	*	*	*	0	*
2020		*	*	*	*	*	*	0	*
2019		*	*	*	*	*	*	0	*
2018		*	*	*	*	*	*	0	*
2017		*	*	*	*	*	*	0	*
2016		*	*	*	*	*	*	0	*
2015		*	*	*	*	*	*	0	*
2014		36	*	*	*	110	34.5	4	1.9
2013		5	41	*	90	100	29.3	28	1.5
2012		4.5	19	24.3	60	130	29.6	28	9
2011		4.5	15	*	44	49	14.5	29	9
2010		4.5	19	21.9	44	63	15.8	27	9
2009		4.5	21	31.3	57	160	32.5	31	9
2008		15	85	102	200	260	62.6	28	1
2007		4.5	50	53.8	92	230	42.7	30	9
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		28	*	*	*	140	47.1	5	3
2002		29	130	149	250	350	80.7	29	3
2001		19	120	124	210	270	72.7	30	10
2000		38	130	*	270	280	81.4	14	10
1999		17	95	*	210	410	89.4	20	10
1998		22	110	106	190	290	64.5	24	10
1997		14	91	98.5	200	210	57.7	27	10
1996		10	96	119	240	340	83.5	27	10
1995		5	120	*	270	340	89.2	27	10
1994		14	90	*	160	270	60.4	27	10
1993		15	89	107	210	280	72.3	29	10
1992		5	95	110	230	320	80.4	26	10
1991		20	110	179	190	1700	289	31	10
1990		27	120	*	220	340	76.9	15	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.