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	Annual Toxics Summary Santa Barbara-W Carillo Street FAQs Carbon Tetrachloride parts per billion

Read About Estimated Risk

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit	Estimated Risk
2025		*	*	*	*	*	*	0	*	*
2024		*	*	*	*	*	*	0	*	*
2023		*	*	*	*	*	*	0	*	*
2022		*	*	*	*	*	*	0	*	*
2021		*	*	*	*	*	*	0	*	*
2020		*	*	*	*	*	*	0	*	*
2019		*	*	*	*	*	*	0	*	*
2018		*	*	*	*	*	*	0	*	*
2017		*	*	*	*	*	*	0	*	*
2016		*	*	*	*	*	*	0	*	*
2015		*	*	*	*	*	*	0	*	*
2014		*	*	*	*	*	*	0	*	*
2013		*	*	*	*	*	*	0	*	*
2012		*	*	*	*	*	*	0	*	*
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		0.06	*	*	*	0.12	0.019	7	0.02	*
1998		0.08	0.11	*	0.15	0.16	0.024	26	0.02	*
1997		0.08	0.11	*	0.13	0.14	0.015	21	0.02	*
1996		0.06	0.08	0.076	0.08	0.09	0.007	30	0.02	59
1995		0.07	0.10	0.098	0.11	0.12	0.009	29	0.02	75
1994		0.07	0.10	*	0.12	0.13	0.018	20	0.02	*
1993		0.08	0.10	0.102	0.11	0.14	0.014	28	0.02	78
1992		0.10	0.11	*	0.12	0.13	0.007	19	0.02	*
1991		0.10	0.13	0.127	0.14	0.16	0.013	34	0.02	98
1990		0.11	0.13	0.129	0.14	0.15	0.011	27	0.02	99
1989		0.07	0.10	0.098	0.11	0.13	0.016	22	0.02	75

	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.