# 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: CO2O18 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: scsn12
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2015-10-26 13:20:05
# 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   -0.953
N12 1991  8   -1.817
N12 1991  9   -2.359
N12 1991 10   -2.338
N12 1991 11   -1.486
N12 1991 12   -0.747
N12 1992  1   -0.588
N12 1992  2   -0.198
N12 1992  3    0.042
N12 1992  4   -0.110
N12 1992  5    0.170
N12 1992  6    0.357
N12 1992  7   -0.297
N12 1992  8   -1.079
N12 1992  9   -1.388
N12 1992 10   -1.260
N12 1992 11   -0.691
N12 1992 12   -0.472
N12 1993  1   -0.636
N12 1993 11   -1.808
N12 1993 12   -1.308
N12 1994  1   -1.131
N12 1994  2   -0.780
N12 1994  3   -0.738
N12 1994  7   -0.697
N12 1994  8   -1.777
N12 1994  9   -2.342
N12 1994 10   -2.072
N12 1994 11   -0.923
N12 1994 12   -0.214
N12 1995  1   -0.244
N12 1995  2   -0.003
N12 1995  3    0.192
N12 1995  4   -0.162
N12 1995  5   -0.332
N12 1995 10   -2.761
N12 1995 11   -1.158
N12 1995 12   -0.061
N12 1996  1   -0.076
N12 1996  6   -0.486
N12 1996  7   -1.238
N12 1997  1    0.270
N12 1997  2    0.242
N12 1997  3    0.029
N12 1997  4   -0.432
N12 1997  5    0.005
N12 1997 11    0.191
N12 1997 12    0.194
N12 1998  1   -0.028
N12 1998  2    0.380
N12 1998  3    0.627
N12 1998  4    0.313
N12 1998  5    0.333
N12 1998  6    0.636
N12 1998  7    0.459
N12 1998  8    0.212
N12 1998  9    0.119