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HFC-125
parts per billion
Year Months
Present
Minimum Median Mean 90th
Percentile
Maximum Standard
Deviation
Number of
Observations
Detection
Limit
2023
0.1 * * * 0.1 0.00 6 0.2
2022
0.1 0.1 0.17 0.4 0.6 0.13 29 0.2
2021
0.1 0.1 * 0.3 0.7 0.15 23 0.2
2020
0.1 * * * 0.1 0.00 7 0.2
2019
0.1 0.1 0.11 0.1 0.3 0.03 29 0.2
2018
0.1 0.1 * 0.3 1.2 0.20 33 0.2
2017
0.1 0.1 0.10 0.1 0.1 0.00 31 0.2
2016
0.1 0.1 0.10 0.1 0.1 0.00 31 0.2
2015
0.1 0.1 0.16 0.3 1.4 0.24 30 0.2
2014
0.1 0.1 * 0.1 0.1 0.00 16 0.2
2013
0.1 0.1 * 0.1 0.1 0.00 23 0.2
2012
0.1 0.1 0.12 0.1 0.7 0.10 33 0.2
2011
0.1 0.1 * 0.1 0.1 0.00 19 0.2
2010
0.1 0.1 * 0.1 0.1 0.00 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.