Sites with hcfc-22 data available Available Substances Toxics Statistics Home Page Data Descriptions Page
California Home ARB: Home Search Site Map Contact Us
California Air Resources Board

Annual Toxics Summary
ARB's ADAM Air Quality Database
Riverside-Rubidoux FAQs
HCFC-22
parts per billion
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
2023
0.3 0.3 * 0.4 0.5 0.05 20 0.2
2022
0.3 0.4 0.38 0.5 0.7 0.07 29 0.2
2021
0.3 0.3 * 0.5 0.6 0.08 22 0.2
2020
0.3 * * * 0.5 0.08 7 0.2
2019
0.3 0.4 * 0.5 0.7 0.08 25 0.2
2018
* * * * * * 0 *
2017
0.3 0.4 * 0.9 1.0 0.23 20 0.2
2016
0.3 0.5 0.88 1.6 2.7 0.63 30 0.2
2015
0.3 0.4 * 0.5 0.6 0.08 25 0.2
2014
0.3 0.9 0.93 1.3 2.2 0.43 27 0.2
2013
0.3 0.6 1.06 2.1 4.3 0.97 31 0.2
2012
0.3 0.5 0.49 0.7 1.1 0.18 30 0.2
2011
0.3 0.4 * 0.5 0.6 0.09 18 0.2
2010
0.3 0.5 * 0.7 1.0 0.17 26 0.2
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 *
Graph It!
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.