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Annual Statewide Toxics Summary
CFC-12
FAQs
parts per billion
Year
Months
Present
Minimum
Median
Mean
90th
Percentile
Maximum
Standard
Deviation
Number of
Observations
Detection
Limit
2024
0.5
0.5
*
0.5
0.6
0.02
163
0.02
2023
0.4
0.5
0.47
0.5
0.6
0.02
324
0.02
2022
0.4
0.4
0.44
0.5
0.5
0.03
370
0.02
2021
0.4
0.4
*
0.5
0.5
0.03
314
0.02
2020
0.4
0.5
*
0.5
0.5
0.02
106
0.02
2019
0.4
0.4
0.44
0.5
0.5
0.03
400
0.02
2018
0.4
0.5
0.47
0.5
0.6
0.04
392
0.02
2017
0.4
0.5
0.45
0.5
0.6
0.03
394
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.
