# number_of_header_lines: 70
# 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: CH4C13 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: Korea Global Atmosphere Watch Center, Korea
# collaborator_name: Meteorological Administration [KMA]
# 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: amy
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2021-10-19 11:38:19
# 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
AMY 2013 12  -47.448
AMY 2014  1  -47.358
AMY 2014  2  -47.319
AMY 2014  3  -47.341
AMY 2014  4  -47.423
AMY 2014  5  -47.506
AMY 2014  6  -47.561
AMY 2014  7  -47.632
AMY 2014  8  -47.705
AMY 2014  9  -47.681
AMY 2014 10  -47.512
AMY 2014 11  -47.310
AMY 2014 12  -47.175
AMY 2015  1  -47.170
AMY 2015  2  -47.220
AMY 2015  3  -47.275
AMY 2015  4  -47.337
AMY 2015  5  -47.412
AMY 2015  6  -47.506
AMY 2015  7  -47.597
AMY 2015  8  -47.674
AMY 2015  9  -47.735
AMY 2015 10  -47.732
AMY 2015 11  -47.669
AMY 2015 12  -47.579
AMY 2016  1  -47.524
AMY 2016  2  -47.513
AMY 2016  3  -47.493
AMY 2016  4  -47.432
AMY 2016  5  -47.383
AMY 2016  6  -47.452
AMY 2016  7  -47.641
AMY 2016  8  -47.870
AMY 2016  9  -47.958
AMY 2016 10  -47.883
AMY 2016 11  -47.741
AMY 2016 12  -47.652
AMY 2017  1  -47.629
AMY 2017  2  -47.603
AMY 2017  3  -47.545
AMY 2017  4  -47.460
AMY 2017  5  -47.376
AMY 2017  6  -47.368
AMY 2017  7  -47.471
AMY 2017  8  -47.676
AMY 2017  9  -47.860
AMY 2017 10  -47.908
AMY 2017 11  -47.828
AMY 2017 12  -47.710
AMY 2018  1  -47.598
AMY 2018  2  -47.532
AMY 2018  3  -47.514
AMY 2018  4  -47.524
AMY 2018  5  -47.546
AMY 2018  6  -47.563
AMY 2018  7  -47.595
AMY 2018  8  -47.669
AMY 2018  9  -47.760
AMY 2018 10  -47.814
AMY 2018 11  -47.765
AMY 2018 12  -47.653
AMY 2019  1  -47.553
AMY 2019  2  -47.552
AMY 2019  3  -47.630
AMY 2019  4  -47.741
AMY 2019  5  -47.838
AMY 2019  6  -47.919
AMY 2019  7  -48.005
AMY 2019  8  -48.045
AMY 2019  9  -48.006
AMY 2019 10  -47.890
AMY 2019 11  -47.763
AMY 2019 12  -47.676
AMY 2020  1  -47.630
AMY 2020  2  -47.612
AMY 2020  3  -47.614
AMY 2020  4  -47.633
AMY 2020  5  -47.647
AMY 2020  6  -47.639
AMY 2020  7  -47.631
AMY 2020  8  -47.671
AMY 2020  9  -47.792
AMY 2020 10  -47.930
AMY 2020 11  -47.982
AMY 2020 12  -47.916