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	Annual Toxics Summary Riverside-Rubidoux FAQs Trichlorotrifluoroethane parts per billion

Year	Months Present	Minimum	Median	Mean	90th Percentile	Maximum	Standard Deviation	Number of Observations	Detection Limit
2025		0.06	0.07	*	0.07	0.08	0.006	20	0.02
2024		0.06	0.07	0.066	0.07	0.08	0.004	29	0.02
2023		0.06	0.07	0.065	0.07	0.07	0.004	30	0.02
2022		0.04	0.06	0.055	0.06	0.07	0.008	29	0.02
2021		0.05	0.05	*	0.06	0.07	0.006	22	0.02
2020		0.06	*	*	*	0.07	0.004	7	0.02
2019		0.06	0.06	*	0.07	0.08	0.005	26	0.02
2018		*	*	*	*	*	*	0	*
2017		0.06	0.07	*	0.07	0.08	0.004	20	0.02
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	*
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.