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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 0.07 0.004 21 0.02
2024
0.06 0.06 0.063 0.07 0.07 0.003 30 0.02
2023
0.05 0.07 0.064 0.07 0.07 0.004 31 0.02
2022
0.04 0.06 0.054 0.06 0.07 0.007 30 0.02
2021
0.05 0.05 * 0.06 0.07 0.006 24 0.02
2020
0.06 * * * 0.07 0.003 7 0.02
2019
0.06 0.07 0.064 0.07 0.07 0.004 30 0.02
2018
0.06 0.07 0.070 0.07 0.09 0.006 30 0.02
2017
0.06 0.07 * 0.07 0.07 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 *
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.