# number_of_header_lines: 68
# 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:  ************ COLLABORATORS ***************
# comment: 
# comment: NOAA thanks the following collaborators without
# comment: whom these measurements would not be possible.
# comment: 
# collaborator_name: Lulin Atmospheric Background Station [LABS]
# 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: lln
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2015-10-26 13:19:44
# 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
LLN 2006  8   -0.158
LLN 2006  9   -0.317
LLN 2006 10   -0.142
LLN 2006 11    0.329
LLN 2006 12    0.712
LLN 2007  1    0.935
LLN 2007  2    0.896
LLN 2007  3    0.708
LLN 2007  4    0.514
LLN 2007  5    0.318
LLN 2007  6    0.205
LLN 2007  7    0.191
LLN 2007  8    0.033
LLN 2007  9   -0.172
LLN 2007 10   -0.080
LLN 2007 11    0.276
LLN 2007 12    0.527
LLN 2008  1    0.629
LLN 2008  2    0.615
LLN 2008  3    0.618
LLN 2008  4    0.685
LLN 2008  5    0.643
LLN 2008  6    0.486
LLN 2008  7    0.307
LLN 2008  8    0.045
LLN 2008  9   -0.225
LLN 2008 10   -0.210
LLN 2008 11    0.007
LLN 2008 12    0.232
LLN 2009  1    0.397
LLN 2009  2    0.504
LLN 2009  3    0.650
LLN 2009  4    0.801
LLN 2009  5    0.722
LLN 2009  6    0.353
LLN 2009  7   -0.036
LLN 2009  8   -0.274
LLN 2009  9   -0.276
LLN 2009 10    0.085
LLN 2009 11    0.464
LLN 2009 12    0.651
LLN 2010  1    0.701
LLN 2010  2    0.731
LLN 2010  3    0.778
LLN 2010  4    0.810
LLN 2010  5    0.705
LLN 2010  6    0.447
LLN 2010  7    0.141
LLN 2010  8   -0.293
LLN 2010  9   -0.638
LLN 2010 10   -0.521
LLN 2010 11   -0.063
LLN 2010 12    0.331
LLN 2011  1    0.537
LLN 2011  2    0.649
LLN 2011  3    0.712
LLN 2011  4    0.690
LLN 2011  5    0.449
LLN 2011  6    0.147
LLN 2011  7   -0.001
LLN 2011  8   -0.209
LLN 2011  9   -0.472
LLN 2011 10   -0.457
LLN 2011 11   -0.093
LLN 2011 12    0.357
LLN 2012  1    0.652
LLN 2012  2    0.693
LLN 2012  3    0.629
LLN 2012  4    0.624
LLN 2012  5    0.562
LLN 2012  6    0.322
LLN 2012  7   -0.039
LLN 2012  8   -0.452
LLN 2012  9   -0.652
LLN 2012 10   -0.435
LLN 2012 11   -0.027
LLN 2012 12    0.213
LLN 2013  1    0.381
LLN 2013  2    0.525
LLN 2013  3    0.638
LLN 2013  4    0.701
LLN 2013  5    0.589
LLN 2013  6    0.413
LLN 2013  7    0.294
LLN 2013  8    0.116
LLN 2013  9   -0.105
LLN 2013 10   -0.167
LLN 2013 11   -0.049
LLN 2013 12    0.129
LLN 2014  1    0.396
LLN 2014  2    0.639
LLN 2014  3    0.765
LLN 2014  4    0.697
LLN 2014  5    0.408
LLN 2014  6    0.159
LLN 2014  7    0.143
LLN 2014  8    0.209
LLN 2014  9    0.199
LLN 2014 10    0.259
LLN 2014 11    0.330
LLN 2014 12    0.324