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Trichlorotrifluoroethane
parts per billion
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
2025
0.06 0.06 * 0.07 0.08 0.005 21 0.02
2024
0.06 0.06 0.063 0.07 0.07 0.003 29 0.02
2023
0.05 0.07 0.064 0.07 0.07 0.005 29 0.02
2022
0.04 0.06 0.054 0.07 0.07 0.008 30 0.02
2021
0.04 0.05 * 0.06 0.07 0.006 23 0.02
2020
0.06 * * * 0.07 0.002 9 0.02
2019
0.06 0.06 0.063 0.07 0.07 0.003 30 0.02
2018
0.06 0.07 0.069 0.07 0.09 0.007 31 0.02
2017
0.01 0.07 0.066 0.07 0.07 0.011 29 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 *
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.