# number_of_header_lines: 54
# 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: CH4C13 SIL (Individual Flasks)
# contact_name: Sylvia Englund Michel
# contact_telephone: (303) 492-5495
# contact_email: Sylvia.Englund@colorado.edu
# comment: 
# comment:  ************ COLLABORATORS ***************
# comment: 
# comment: NOAA thanks the following collaborators without
# comment: whom these measurements would not be possible.
# comment: 
# collaborator_name: U.S. Fish and Wildlife Service [USFWS]
# collaborator_url: http://midway.fws.gov
# comment: 
# comment:  ************ RECIPROCITY AGREEMENT ***************
# comment: 
# comment:
# comment:  ************ DATA DESCRIPTION ***************
# comment:
# description_site-code: mid
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2023-09-21 15:03:46
# 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
MID 2015 12  -47.518
MID 2016  1  -47.482
MID 2016  2  -47.439
MID 2016  3  -47.387
MID 2016  4  -47.328
MID 2016  5  -47.274
MID 2016  6  -47.228
MID 2016  7  -47.224
MID 2016  8  -47.294
MID 2016  9  -47.422
MID 2016 10  -47.533
MID 2016 11  -47.581
MID 2016 12  -47.543
MID 2017  1  -47.477
MID 2017  2  -47.432
MID 2017  3  -47.416
MID 2017  4  -47.403
MID 2017  5  -47.359
MID 2017  6  -47.301
MID 2017  7  -47.290
MID 2017  8  -47.367
MID 2017  9  -47.511
MID 2017 10  -47.628
MID 2017 11  -47.671
MID 2017 12  -47.613
MID 2018  1  -47.514
MID 2018  2  -47.456
MID 2018  3  -47.459
MID 2018  4  -47.472
MID 2018  5  -47.441
MID 2018  6  -47.378
MID 2018  7  -47.359
MID 2018  8  -47.424
MID 2018  9  -47.521
MID 2018 10  -47.571
MID 2018 11  -47.566
MID 2018 12  -47.556
MID 2019  1  -47.556
MID 2019  2  -47.544
MID 2019  3  -47.501
MID 2019  4  -47.435
MID 2019  5  -47.362
MID 2019  6  -47.328
MID 2019  7  -47.392
MID 2019  8  -47.568
MID 2019  9  -47.760
MID 2019 10  -47.878
MID 2019 11  -47.827
MID 2019 12  -47.684
MID 2020  1  -47.546
MID 2020  2  -47.491
MID 2020  3  -47.486
MID 2020  4  -47.474
MID 2020  5  -47.442
MID 2020  6  -47.423
MID 2020  7  -47.459
MID 2020  8  -47.570
MID 2020  9  -47.717
MID 2020 10  -47.815
MID 2020 11  -47.814
MID 2020 12  -47.739
MID 2021  1  -47.665
MID 2021  2  -47.641
MID 2021  3  -47.641
MID 2021  4  -47.620
MID 2021  5  -47.573
MID 2021  6  -47.527
MID 2021  7  -47.535
MID 2021  8  -47.600
MID 2021  9  -47.703
MID 2021 10  -47.790
MID 2021 11  -47.828
MID 2021 12  -47.825
MID 2022  1  -47.796
MID 2022  2  -47.772
MID 2022  3  -47.753
MID 2022  4  -47.721
MID 2022  5  -47.663
MID 2022  6  -47.592
MID 2022  7  -47.574
MID 2022  8  -47.657
MID 2022  9  -47.804
MID 2022 10  -47.919
MID 2022 11  -47.968
MID 2022 12  -47.936