# number_of_header_lines: 62
# comment:  
# comment:  ************ USE OF ESRL GMD DATA ****************
# comment:  
# comment: These data are made freely available to the public and the
# comment: scientific community in the belief that their wide dissemination
# comment: will lead to greater understanding and new scientific insights.
# comment: The availability of these data does not constitute publication
# comment: of the data.  NOAA relies on the ethics and integrity of the user to
# comment: ensure that GML receives fair credit for their work.  If the data 
# comment: are obtained for potential use in a publication or presentation, 
# comment: GML should be informed at the outset of the nature of this work.  
# comment: If the GML data are essential to the work, or if an important 
# comment: result or conclusion depends on the GML data, co-authorship
# comment: may be appropriate.  This should be discussed at an early stage in
# comment: the work.  Manuscripts using the GML data should be sent to GML
# comment: for review before they are submitted for publication so we can
# comment: ensure that the quality and limitations of the data are accurately
# comment: represented.
# 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: CH4 CCGG (Individual Flasks)
# contact_name: Ed Dlugokencky
# contact_telephone: (303) 497-6228
# contact_email: Ed.Dlugokencky@noaa.gov
# comment: 
# comment:  ************ RECIPROCITY AGREEMENT ***************
# comment: 
# comment: Use of these data implies an agreement to reciprocate.
# comment: Laboratories making similar measurements agree to make their
# comment: own data available to the general public and to the scientific
# comment: community in an equally complete and easily accessible form.
# comment: Modelers are encouraged to make available to the community,
# comment: upon request, their own tools used in the interpretation
# comment: of the GML data, namely well documented model code, transport
# comment: fields, and additional information necessary for other
# comment: scientists to repeat the work and to run modified versions.
# comment: Model availability includes collaborative support for new
# comment: users of the models.
# comment:
# comment:  ************ DATA DESCRIPTION ***************
# comment:
# description_site-code: scsn12
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2021-07-30 12:33:04
# comment:
# comment:  ************ DATA DOCUMENTATION ***************
# comment:
# comment: Please refer to the species-specific README file in the
# comment: appropriate directory folder at ftp://aftp.cmdl.noaa.gov/data/trace_gases/.
# comment:
# data_fields: site year month value
N12 1991  7  1729.76
N12 1991  8  1735.20
N12 1991  9  1761.99
N12 1991 10  1793.40
N12 1991 11  1787.02
N12 1991 12  1781.84
N12 1992  1  1791.58
N12 1992  2  1776.75
N12 1992  3  1755.27
N12 1992  4  1743.60
N12 1992  5  1729.75
N12 1992  6  1718.71
N12 1992  7  1721.95
N12 1992  8  1739.57
N12 1992  9  1754.77
N12 1992 10  1770.95
N12 1992 11  1792.20
N12 1992 12  1788.76
N12 1993  1  1783.45
N12 1993 12  1785.93
N12 1994  1  1793.03
N12 1994  2  1781.99
N12 1994  3  1778.41
N12 1994  4  1761.17
N12 1994  5  1735.24
N12 1994  6  1739.72
N12 1994  7  1744.93
N12 1994  8  1758.30
N12 1994  9  1789.83
N12 1994 10  1809.71
N12 1994 11  1807.60
N12 1994 12  1803.77
N12 1995  1  1800.48
N12 1995  2  1790.01
N12 1995  3  1780.60
N12 1995  4  1772.38
N12 1995  5  1746.75
N12 1995 10  1789.89
N12 1995 11  1813.95
N12 1995 12  1809.47
N12 1996  1  1810.47
N12 1996  2  1814.28
N12 1996  3  1822.84
N12 1996  4  1813.24
N12 1996  5  1775.68
N12 1996  6  1742.91
N12 1996  7  1729.82
N12 1996  8  1743.72
N12 1996  9  1775.66
N12 1996 10  1788.72
N12 1996 11  1793.09
N12 1996 12  1815.78
N12 1997  1  1823.16
N12 1997  2  1800.28
N12 1997  3  1774.72
N12 1997  4  1765.18
N12 1997  5  1761.20
N12 1997  6  1745.00
N12 1997  7  1747.99
N12 1997  8  1774.81
N12 1997  9  1781.61
N12 1997 10  1781.84
N12 1997 11  1797.38
N12 1997 12  1810.44
N12 1998  1  1808.04
N12 1998  2  1788.64
N12 1998  3  1776.75
N12 1998  4  1778.51
N12 1998  5  1765.12
N12 1998  6  1747.21
N12 1998  7  1749.41
N12 1998  8  1759.69
N12 1998  9  1767.33
N12 1998 10  1778.56