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	Annual Toxics Summary Chico-East Avenue FAQs Titanium nanograms per cubic meter

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2024		4	*	*	*	4	55.9	1	2.69
2023		4	52	60.9	110	290	55.9	30	2.69
2022		5	41	*	91	134	31.6	28	2.69
2021		1.345	41	*	110	135	39.4	23	2.69
2020		9	*	*	*	88	28.5	7	2.69
2019		1.345	21	42.1	110	150	46.7	29	2.69
2018		1.345	33	46.4	91	155	38.6	31	2.69
2017		1.345	36	48.4	110	171	45.2	31	2.69
2016		1.345	31	*	85	274	54.8	32	2.69
2015		4	50	51.6	88	119	30.6	30	2.69
2014		0.95	30	31.4	57	100	24.0	31	1.9
2013		5	40	*	96	100	30.2	28	1.5
2012		4.5	14	*	41	52	15.4	18	9
2011		*	*	*	*	*	*	0	*
2010		*	*	*	*	*	*	0	*
2009		*	*	*	*	*	*	0	*
2008		*	*	*	*	*	*	0	*
2007		*	*	*	*	*	*	0	*
2006		*	*	*	*	*	*	0	*
2005		*	*	*	*	*	*	0	*
2004		*	*	*	*	*	*	0	*
2003		*	*	*	*	*	*	0	*
2002		*	*	*	*	*	*	0	*
2001		*	*	*	*	*	*	0	*
2000		*	*	*	*	*	*	0	*
1999		*	*	*	*	*	*	0	*
1998		*	*	*	*	*	*	0	*
1997		*	*	*	*	*	*	0	*
1996		*	*	*	*	*	*	0	*
1995		*	*	*	*	*	*	0	*
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.