# number_of_header_lines: 54
# comment:  
# comment:  ************ USE OF GML DATA ****************
# comment:  
# comment: These data are made freely available to the public and the scientific
# comment: community in the belief that their wide dissemination will lead to
# comment: greater understanding and new scientific insights. To ensure that GML
# comment: receives fair credit for their work please include relevant citation
# comment: text in publications. We encourage users to contact the data providers,
# comment: who can provide detailed information about the measurements and
# comment: scientific insight.  In cases where the data are central to a
# comment: publication, coauthorship for data providers may be appropriate.
# comment: 
# comment: 
# comment: Please see accompanying README file, if available, for citation text.
# comment:  
# comment: Every effort is made to produce the most accurate and precise
# comment: measurements possible.  However, we reserve the right to make
# comment: corrections to the data based on recalibration of standard gases
# comment: or for other reasons deemed scientifically justified.
# comment: 
# comment: We are not responsible for results and conclusions based on use
# comment: of these data without regard to this warning.
# comment: 
# contact_parameter: SF6 CCGG (Individual Flasks)
# contact_name: Xin Lan
# contact_telephone: (999) 999-9999
# contact_email: xin.lan@noaa.gov
# comment: 
# comment:  ************ COLLABORATORS ***************
# comment: 
# comment: NOAA thanks the following collaborators without
# comment: whom these measurements would not be possible.
# comment: 
# collaborator_name: NOAA Atlantic Oceanographic and Meteorological
# collaborator_name: Laboratory [AOML]
# comment: 
# comment:  ************ RECIPROCITY AGREEMENT ***************
# comment: 
# comment:
# comment:  ************ DATA DESCRIPTION ***************
# comment:
# description_site-code: key
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2023-08-28 15:08:53
# comment:
# comment:  ************ DATA DOCUMENTATION ***************
# comment:
# comment: Please refer to the species-specific README file in the
# comment: appropriate directory folder at https://gml.noaa.gov/aftp/data/trace_gases/.
# comment:
# data_fields: site year month value
KEY 1997  4     4.07
KEY 1997  5     4.05
KEY 1997  6     4.07
KEY 1997  7     4.10
KEY 1997  8     4.12
KEY 1997  9     4.17
KEY 1997 10     4.25
KEY 1997 11     4.29
KEY 1997 12     4.28
KEY 1998  1     4.29
KEY 1998  2     4.35
KEY 1998  3     4.37
KEY 1998  4     4.36
KEY 1998  5     4.35
KEY 1998  6     4.32
KEY 1998  7     4.32
KEY 1998  8     4.34
KEY 1998  9     4.38
KEY 1998 10     4.43
KEY 1998 11     4.46
KEY 1998 12     4.44
KEY 1999  1     4.47
KEY 1999  2     4.51
KEY 1999  3     4.52
KEY 1999  4     4.48
KEY 1999  5     4.46
KEY 1999  6     4.47
KEY 1999  7     4.49
KEY 1999  8     4.48
KEY 1999  9     4.48
KEY 1999 10     4.52
KEY 1999 11     4.57
KEY 1999 12     4.59
KEY 2000  1     4.59
KEY 2000  2     4.59
KEY 2000  3     4.62
KEY 2000  4     4.68
KEY 2000  5     4.70
KEY 2000  6     4.68
KEY 2000  7     4.69
KEY 2000  8     4.70
KEY 2000  9     4.71
KEY 2000 10     4.80
KEY 2000 11     4.92
KEY 2000 12     4.95
KEY 2001  1     4.89
KEY 2001  2     4.83
KEY 2001  3     4.86
KEY 2001  4     4.91
KEY 2001  5     4.90
KEY 2001  6     4.87
KEY 2001  7     4.86
KEY 2001  8     4.85
KEY 2001  9     4.86
KEY 2001 10     4.94
KEY 2001 11     5.02
KEY 2001 12     5.03
KEY 2002  1     5.05
KEY 2002  2     5.06
KEY 2002  3     5.05
KEY 2002  4     5.08
KEY 2002  5     5.11
KEY 2002  6     5.10
KEY 2002  7     5.07
KEY 2002  8     5.07
KEY 2002  9     5.09
KEY 2002 10     5.17
KEY 2002 11     5.26
KEY 2002 12     5.29
KEY 2003  1     5.29
KEY 2003  2     5.30
KEY 2003  3     5.31
KEY 2003  4     5.33
KEY 2003  5     5.36
KEY 2003  6     5.37
KEY 2003  7     5.35
KEY 2003  8     5.36
KEY 2003  9     5.42
KEY 2003 10     5.50
KEY 2003 11     5.52
KEY 2003 12     5.49
KEY 2004  1     5.49
KEY 2004  2     5.52
KEY 2004  3     5.58
KEY 2004  4     5.63
KEY 2004  5     5.59
KEY 2004  6     5.53
KEY 2004  7     5.53
KEY 2004  8     5.55
KEY 2004  9     5.59
KEY 2004 10     5.65
KEY 2004 11     5.70
KEY 2004 12     5.72
KEY 2005  1     5.76
KEY 2005  2     5.82
KEY 2005  3     5.84
KEY 2005  4     5.82
KEY 2005  5     5.77
KEY 2005  6     5.74
KEY 2005  7     5.76
KEY 2005  8     5.77
KEY 2005  9     5.76
KEY 2005 10     5.81
KEY 2005 11     5.91
KEY 2005 12     5.98
KEY 2006  1     5.98
KEY 2006  2     5.98
KEY 2006  3     6.01
KEY 2006  4     6.01
KEY 2006  5     5.99
KEY 2006  6     5.99
KEY 2006  7     6.00
KEY 2006  8     6.02
KEY 2006  9     6.08
KEY 2006 10     6.14
KEY 2006 11     6.15
KEY 2006 12     6.17
KEY 2007  1     6.23
KEY 2007  2     6.30
KEY 2007  3     6.34
KEY 2007  4     6.34
KEY 2007  5     6.32
KEY 2007  6     6.31
KEY 2007  7     6.31
KEY 2007  8     6.29
KEY 2007  9     6.31
KEY 2007 10     6.38
KEY 2007 11     6.47
KEY 2007 12     6.54
KEY 2008  1     6.57
KEY 2008  2     6.56
KEY 2008  3     6.57
KEY 2008  4     6.61
KEY 2008  5     6.61
KEY 2008  6     6.57
KEY 2008  7     6.56
KEY 2008  8     6.58
KEY 2008  9     6.63
KEY 2008 10     6.73
KEY 2008 11     6.81
KEY 2008 12     6.82
KEY 2009  1     6.81
KEY 2009  2     6.84
KEY 2009  3     6.87
KEY 2009  4     6.88
KEY 2009  5     6.86
KEY 2009  6     6.85
KEY 2009  7     6.89
KEY 2009  8     6.93
KEY 2009  9     6.96
KEY 2009 10     7.00
KEY 2009 11     7.02
KEY 2009 12     7.04
KEY 2010  1     7.10
KEY 2010  2     7.16
KEY 2010  3     7.17
KEY 2010  4     7.17
KEY 2010  5     7.17
KEY 2010  6     7.16
KEY 2010  7     7.18
KEY 2010  8     7.24
KEY 2010  9     7.31
KEY 2010 10     7.34
KEY 2010 11     7.36
KEY 2010 12     7.37
KEY 2011  1     7.36
KEY 2011  2     7.37
KEY 2011  3     7.41
KEY 2011  4     7.45
KEY 2011  5     7.46
KEY 2011  6     7.45
KEY 2011  7     7.43
KEY 2011  8     7.42
KEY 2011  9     7.46
KEY 2011 10     7.53
KEY 2011 11     7.60
KEY 2011 12     7.64
KEY 2012  1     7.65
KEY 2012  2     7.66
KEY 2012  3     7.69
KEY 2012  4     7.72
KEY 2012  5     7.69
KEY 2012  6     7.68
KEY 2012  7     7.70
KEY 2012  8     7.72
KEY 2012  9     7.77
KEY 2012 10     7.89
KEY 2012 11     7.96
KEY 2012 12     7.95
KEY 2013  1     7.96
KEY 2013  2     8.02
KEY 2013  3     8.06
KEY 2013  4     8.03
KEY 2013  5     8.01
KEY 2013  6     8.03
KEY 2013  7     8.07
KEY 2013  8     8.10
KEY 2013  9     8.14
KEY 2013 10     8.20
KEY 2013 11     8.24
KEY 2013 12     8.25
KEY 2014  1     8.28
KEY 2014  2     8.33
KEY 2014  3     8.34
KEY 2014  4     8.34
KEY 2014  5     8.37
KEY 2014  6     8.38
KEY 2014  7     8.37
KEY 2014  8     8.39
KEY 2014  9     8.44
KEY 2014 10     8.55
KEY 2014 11     8.63
KEY 2014 12     8.63
KEY 2015  1     8.60
KEY 2015  2     8.63
KEY 2015  3     8.69
KEY 2015  4     8.74
KEY 2015  5     8.74
KEY 2015  6     8.70
KEY 2015  7     8.67
KEY 2015  8     8.70
KEY 2015  9     8.76
KEY 2015 10     8.82
KEY 2015 11     8.86
KEY 2015 12     8.92
KEY 2016  1     8.96
KEY 2016  2     8.99
KEY 2016  3     9.03
KEY 2016  4     9.07
KEY 2016  5     9.07
KEY 2016  6     9.07
KEY 2016  7     9.07
KEY 2016  8     9.06
KEY 2016  9     9.08
KEY 2016 10     9.19
KEY 2016 11     9.29
KEY 2016 12     9.32
KEY 2017  1     9.32
KEY 2017  2     9.32
KEY 2017  3     9.36
KEY 2017  4     9.40
KEY 2017  5     9.39
KEY 2017  6     9.37
KEY 2017  7     9.40
KEY 2017  8     9.42
KEY 2017  9     9.45
KEY 2017 10     9.52
KEY 2017 11     9.58
KEY 2017 12     9.63
KEY 2018  1     9.68
KEY 2018  2     9.69
KEY 2018  3     9.68
KEY 2018  4     9.72
KEY 2018  5     9.75
KEY 2018  6     9.74
KEY 2018  7     9.74
KEY 2018  8     9.76
KEY 2018  9     9.80
KEY 2018 10     9.87
KEY 2018 11     9.94
KEY 2018 12    10.01
KEY 2019  1    10.03
KEY 2019  2    10.01
KEY 2019  3    10.03
KEY 2019  4    10.06
KEY 2019  5    10.05
KEY 2019  6    10.06
KEY 2019  7    10.08
KEY 2019  8    10.10
KEY 2019  9    10.15
KEY 2019 10    10.22
KEY 2019 11    10.27
KEY 2019 12    10.29
KEY 2020  1    10.30
KEY 2020  2    10.31
KEY 2020  3    10.35
KEY 2020  4    10.40
KEY 2020  5    10.42
KEY 2020  6    10.41
KEY 2020  7    10.40
KEY 2020  8    10.43
KEY 2020  9    10.49
KEY 2020 10    10.54
KEY 2020 11    10.59
KEY 2020 12    10.65
KEY 2021  1    10.68
KEY 2021  2    10.68
KEY 2021  3    10.71
KEY 2021  4    10.78
KEY 2021  5    10.81
KEY 2021  6    10.80
KEY 2021  7    10.79
KEY 2021  8    10.77
KEY 2021  9    10.81
KEY 2021 10    10.91
KEY 2021 11    11.02
KEY 2021 12    11.07
KEY 2022  1    11.09
KEY 2022  2    11.06
KEY 2022  3    11.09
KEY 2022  4    11.18
KEY 2022  5    11.22
KEY 2022  6    11.19
KEY 2022  7    11.18
KEY 2022  8    11.20
KEY 2022  9    11.25
KEY 2022 10    11.34
KEY 2022 11    11.42
KEY 2022 12    11.44