# number_of_header_lines: 46
# 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: CH4 CCGG (Individual Flasks)
# contact_name: Xin Lan
# contact_telephone: (999) 999-9999
# contact_email: xin.lan@noaa.gov
# comment: 
# comment:  ************ RECIPROCITY AGREEMENT ***************
# comment: 
# comment:
# comment:  ************ DATA DESCRIPTION ***************
# comment:
# description_site-code: scsn18
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2023-08-28 15:10:28
# 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
N18 1991  7  1717.11
N18 1991  8  1746.29
N18 1991  9  1795.74
N18 1991 10  1825.60
N18 1991 11  1811.98
N18 1991 12  1783.34
N18 1992  1  1795.28
N18 1992  2  1800.85
N18 1992  3  1765.65
N18 1992  4  1743.38
N18 1992  5  1737.46
N18 1992  6  1722.62
N18 1992  7  1722.50
N18 1992  8  1739.72
N18 1992  9  1782.76
N18 1992 10  1810.90
N18 1992 11  1802.59
N18 1992 12  1798.73
N18 1993  1  1808.47
N18 1993 12  1820.66
N18 1994  1  1814.32
N18 1994  2  1800.20
N18 1994  3  1792.66
N18 1994  4  1770.81
N18 1994  5  1744.77
N18 1994  6  1737.32
N18 1994  7  1741.02
N18 1994  8  1747.43
N18 1994  9  1774.08
N18 1994 10  1822.28
N18 1994 11  1834.14
N18 1994 12  1823.41
N18 1995  1  1820.06
N18 1995  2  1821.60
N18 1995  3  1808.03
N18 1995  4  1784.02
N18 1995 10  1808.48
N18 1995 11  1838.36
N18 1995 12  1829.43
N18 1996  1  1832.48
N18 1996  2  1834.81
N18 1996  3  1825.65
N18 1996  4  1814.47
N18 1996  5  1786.86
N18 1996  6  1748.77
N18 1996  7  1734.22
N18 1996  8  1744.99
N18 1996  9  1763.15
N18 1996 10  1793.69
N18 1996 11  1817.35
N18 1996 12  1829.75
N18 1997  1  1833.40
N18 1997  2  1816.10
N18 1997  3  1779.60
N18 1997  4  1769.71
N18 1997  5  1772.76
N18 1997  6  1757.22
N18 1997  7  1751.49
N18 1997  8  1773.78
N18 1997  9  1811.36
N18 1997 10  1821.01
N18 1997 11  1818.50
N18 1997 12  1820.61
N18 1998  1  1820.34
N18 1998  2  1831.72
N18 1998  3  1826.52
N18 1998  4  1801.14
N18 1998  5  1775.92
N18 1998  6  1753.58
N18 1998  7  1743.90
N18 1998  8  1756.52
N18 1998  9  1791.92
N18 1998 10  1814.04