# number_of_header_lines: 69
# 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: NOAA Atlantic Oceanographic and Meteorological
# collaborator_name: Laboratory [AOML]
# 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: key
# description_project-abbr: ccg_surface
# description_strategy-abbr: flask
# description_analysis-constraints: flag:..%
# description_creation-time: 2015-10-26 13:19:40
# 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
KEY 1991 12   -0.611
KEY 1992  1   -0.437
KEY 1992  2   -0.215
KEY 1992  3    0.229
KEY 1992  4    0.680
KEY 1992  5    0.756
KEY 1993  2    0.379
KEY 1993  3    0.441
KEY 1993  4    0.627
KEY 1994  3    0.713
KEY 1995  1   -0.279
KEY 1995  2   -0.385
KEY 1995  3   -0.190
KEY 1995  4    0.212
KEY 1995 11   -0.431
KEY 1995 12   -0.440
KEY 1996  1   -0.410
KEY 1996  2   -0.424
KEY 1996  3   -0.223
KEY 1996 11   -0.652
KEY 1996 12   -0.467
KEY 1997  4    0.317
KEY 1997  5    0.483
KEY 1997  6    0.372
KEY 1997  7    0.076
KEY 1997  8   -0.341
KEY 1997  9   -0.557
KEY 1997 10   -0.450
KEY 1997 11   -0.226
KEY 1997 12    0.033
KEY 1998  1    0.059
KEY 1998  2   -0.113
KEY 1998  3   -0.013
KEY 1998  4    0.371
KEY 1998  5    0.530
KEY 1998  6    0.431
KEY 1998  7    0.130
KEY 1998  8   -0.321
KEY 1998  9   -0.716
KEY 1998 10   -0.786
KEY 1998 11   -0.617
KEY 1998 12   -0.279
KEY 1999  1   -0.086
KEY 1999  2   -0.125
KEY 1999  3    0.018
KEY 1999  4    0.332
KEY 1999  5    0.415
KEY 1999  6    0.396
KEY 1999  7    0.392
KEY 1999  8    0.167
KEY 1999  9   -0.215
KEY 1999 10   -0.480
KEY 1999 11   -0.473
KEY 1999 12   -0.096
KEY 2000  1    0.203
KEY 2000  2    0.214
KEY 2000  3    0.274
KEY 2000  4    0.460
KEY 2000  5    0.522
KEY 2000  6    0.545
KEY 2000  7    0.628
KEY 2000  8    0.599
KEY 2000  9    0.430
KEY 2000 10    0.160
KEY 2000 11   -0.098
KEY 2000 12   -0.104
KEY 2001  1    0.009
KEY 2001  2    0.070
KEY 2001  3    0.252
KEY 2001  4    0.474
KEY 2001  5    0.458
KEY 2001  6    0.387
KEY 2001  7    0.475
KEY 2001  8    0.494
KEY 2001  9    0.378
KEY 2001 10    0.124
KEY 2001 11   -0.121
KEY 2001 12   -0.071
KEY 2002  1    0.163
KEY 2002  2    0.292
KEY 2002  3    0.370
KEY 2002  4    0.313
KEY 2002  5   -0.004
KEY 2002  6   -0.142
KEY 2002  7    0.077
KEY 2002  8    0.294
KEY 2002  9    0.310
KEY 2003  2    0.494
KEY 2003  3    0.504
KEY 2003  4    0.498
KEY 2003  5    0.218
KEY 2003  6   -0.037
KEY 2003 11   -0.261
KEY 2003 12   -0.164
KEY 2004  1   -0.031
KEY 2004  2   -0.012
KEY 2004  3    0.215
KEY 2004  4    0.605
KEY 2004  5    0.760
KEY 2004 11   -0.057
KEY 2004 12   -0.024
KEY 2005  1    0.092
KEY 2005  2    0.121
KEY 2005  3    0.234
KEY 2005  4    0.327
KEY 2005  5    0.082
KEY 2005  6   -0.142
KEY 2005  7   -0.053
KEY 2005  8    0.141
KEY 2005  9    0.238
KEY 2005 10    0.160
KEY 2005 11   -0.014
KEY 2005 12    0.006
KEY 2006  1    0.091
KEY 2006  2    0.048
KEY 2006  3    0.130
KEY 2006  4    0.321
KEY 2006  5    0.396
KEY 2006  6    0.445
KEY 2006  7    0.500
KEY 2006  8    0.336
KEY 2006  9    0.042
KEY 2006 10   -0.150
KEY 2006 11   -0.147
KEY 2006 12    0.063
KEY 2007  1    0.231
KEY 2007  2    0.201
KEY 2007  3    0.327
KEY 2007  4    0.607
KEY 2007  5    0.746
KEY 2007  6    0.754
KEY 2007  7    0.695
KEY 2007  8    0.406
KEY 2007  9    0.077
KEY 2007 10   -0.132
KEY 2007 11   -0.094
KEY 2007 12    0.176
KEY 2008  1    0.390
KEY 2008  2    0.317
KEY 2008  3    0.321
KEY 2008  4    0.499
KEY 2008  5    0.590
KEY 2008  6    0.669
KEY 2008  7    0.767
KEY 2008  8    0.612
KEY 2008  9    0.277
KEY 2008 10    0.019
KEY 2008 11   -0.027
KEY 2008 12    0.166
KEY 2009  1    0.275
KEY 2009  2    0.136
KEY 2009  3    0.123
KEY 2009  4    0.310
KEY 2009  5    0.382
KEY 2009  6    0.465
KEY 2009  7    0.624
KEY 2009  8    0.628
KEY 2009  9    0.456
KEY 2009 10    0.192
KEY 2009 11   -0.024
KEY 2009 12   -0.032
KEY 2010  1    0.058
KEY 2010  2    0.074
KEY 2010  3    0.274
KEY 2010  4    0.571
KEY 2010  5    0.585
KEY 2010  6    0.464
KEY 2010  7    0.398
KEY 2010  8    0.244
KEY 2010  9    0.032
KEY 2010 10   -0.144
KEY 2010 11   -0.246
KEY 2010 12   -0.108
KEY 2011  1    0.039
KEY 2011  2    0.033
KEY 2011  3    0.121
KEY 2011  4    0.335
KEY 2011  5    0.366
KEY 2011  6    0.359
KEY 2011  7    0.398
KEY 2011  8    0.269
KEY 2011  9    0.006
KEY 2011 10   -0.228
KEY 2011 11   -0.364
KEY 2011 12   -0.217
KEY 2012  1   -0.008
KEY 2012  2    0.063
KEY 2012  3    0.239
KEY 2012  4    0.477
KEY 2012  5    0.514
KEY 2012  6    0.491
KEY 2012  7    0.564
KEY 2012  8    0.509
KEY 2012  9    0.329
KEY 2012 10    0.082
KEY 2012 11   -0.073
KEY 2012 12    0.036
KEY 2013  1    0.205
KEY 2013  2    0.203
KEY 2013  3    0.298
KEY 2013  4    0.527
KEY 2013  5    0.587
KEY 2013  6    0.586
KEY 2013  7    0.595
KEY 2013  8    0.399
KEY 2013  9    0.107
KEY 2013 10   -0.145
KEY 2013 11   -0.201
KEY 2013 12    0.025
KEY 2014  1    0.194
KEY 2014  2    0.138
KEY 2014  3    0.198
KEY 2014  4    0.453
KEY 2014  5    0.573
KEY 2014  6    0.624
KEY 2014  7    0.724
KEY 2014  8    0.657
KEY 2014  9    0.414
KEY 2014 10    0.134
KEY 2014 11   -0.029
KEY 2014 12    0.071