# 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: WITN Television [WITN]
# 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: itn
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2015-10-26 13:19:38
# 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
ITN 1992  9    0.093
ITN 1992 10    0.360
ITN 1992 11    0.201
ITN 1992 12    0.008
ITN 1993  1    0.187
ITN 1993  2    0.039
ITN 1993  3    0.245
ITN 1993  4    0.604
ITN 1993  5    0.595
ITN 1993  6    1.313
ITN 1993  7    1.565
ITN 1993  8    0.082
ITN 1993  9   -0.982
ITN 1993 10   -0.609
ITN 1993 11   -0.638
ITN 1993 12   -0.669
ITN 1994  1   -0.255
ITN 1994  2   -0.167
ITN 1994  3    0.201
ITN 1994  4    0.561
ITN 1994  5    0.397
ITN 1994  6    0.994
ITN 1994  7    1.445
ITN 1994  8    0.117
ITN 1994  9   -0.619
ITN 1994 10   -0.231
ITN 1994 11   -0.481
ITN 1994 12   -0.756
ITN 1995  1   -0.565
ITN 1995  2   -0.566
ITN 1995  3   -0.192
ITN 1995  4    0.286
ITN 1995 10   -0.593
ITN 1995 11   -0.639
ITN 1995 12   -0.622
ITN 1996  1   -0.195
ITN 1996  2   -0.233
ITN 1996  3   -0.110
ITN 1996  4    0.002
ITN 1996  5   -0.254
ITN 1996  9   -0.997
ITN 1996 10   -0.357
ITN 1996 11   -0.405
ITN 1996 12   -0.559
ITN 1997  1   -0.284
ITN 1997  2   -0.271
ITN 1997  3   -0.002
ITN 1997  4    0.318
ITN 1997  5    0.271
ITN 1997  6    1.033
ITN 1997  7    1.611
ITN 1997  8    0.270
ITN 1997  9   -0.670
ITN 1997 10   -0.430
ITN 1997 11   -0.592
ITN 1997 12   -0.711
ITN 1998  1   -0.460
ITN 1998  2   -0.518
ITN 1998  3   -0.234
ITN 1998  4    0.164
ITN 1998  5   -0.050
ITN 1998  9   -1.574
ITN 1998 10   -0.960
ITN 1998 11   -0.900
ITN 1998 12   -0.744
ITN 1999  1   -0.148
ITN 1999  2   -0.039
ITN 1999  3    0.182
ITN 1999  4    0.376