# number_of_header_lines: 61
# 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: insure that ESRL receives fair credit for their work.  If the data 
# comment: are obtained for potential use in a publication or presentation, 
# comment: ESRL should be informed at the outset of the nature of this work.  
# comment: If the ESRL data are essential to the work, or if an important 
# comment: result or conclusion depends on the ESRL data, co-authorship
# comment: may be appropriate.  This should be discussed at an early stage in
# comment: the work.  Manuscripts using the ESRL data should be sent to ESRL
# comment: for review before they are submitted for publication so we can
# comment: insure that the quality and limitations of the data are accurately
# comment: represented.
# 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: CO2C13 SIL (Individual Flasks)
# contact_name: Bruce H Vaughn
# contact_telephone: (303) 492-7985
# contact_email: Bruce.Vaughn@colorado.edu
# 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 ESRL 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: scsn18
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2015-10-26 13:18:32
# 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
N18 1991  7   -7.845
N18 1991  8   -7.770
N18 1991  9   -7.745
N18 1991 10   -7.858
N18 1991 11   -7.933
N18 1991 12   -7.929
N18 1992  1   -7.989
N18 1992  2   -8.013
N18 1992  3   -7.981
N18 1992  4   -8.033
N18 1992  5   -8.071
N18 1992  6   -8.023
N18 1992  7   -7.961
N18 1992  8   -7.839
N18 1992  9   -7.730
N18 1992 10   -7.796
N18 1992 11   -7.896
N18 1992 12   -7.998
N18 1993  1   -8.163
N18 1993 11   -7.902
N18 1993 12   -8.008
N18 1994  1   -8.135
N18 1994  2   -8.153
N18 1994  3   -8.085
N18 1994  4   -8.109
N18 1994  5   -8.115
N18 1994  6   -8.001
N18 1994  7   -7.895
N18 1994  8   -7.803
N18 1994  9   -7.782
N18 1994 10   -7.897
N18 1994 11   -7.993
N18 1994 12   -8.032
N18 1995  1   -8.128
N18 1995  2   -8.185
N18 1995  3   -8.166
N18 1995  4   -8.199
N18 1995 10   -7.925
N18 1995 11   -8.051
N18 1995 12   -8.121
N18 1996  1   -8.253
N18 1996  2   -8.313
N18 1996  3   -8.278
N18 1996  4   -8.268
N18 1996  5   -8.202
N18 1996  6   -8.070
N18 1996  7   -8.038
N18 1996 11   -8.206
N18 1996 12   -8.134
N18 1997  1   -8.128
N18 1997  2   -8.136
N18 1997  3   -8.151
N18 1997  4   -8.284
N18 1997  5   -8.348
N18 1997 11   -7.993
N18 1997 12   -8.048
N18 1998  1   -8.171
N18 1998  2   -8.227
N18 1998  3   -8.211
N18 1998  4   -8.245
N18 1998  5   -8.232
N18 1998  6   -8.130
N18 1998  7   -8.051
N18 1998  8   -7.987
N18 1998  9   -7.973
N18 1998 10   -8.063