************ USE OF CMDL CCGG DATA ****************
 
These data are made freely available to the public and the
scientific community in the belief that their wide dissemination
will lead to greater understanding and new scientific insights.
The availability of these data does not constitute publication
of the data.  We rely on the ethics and integrity of the user to
assure that CMDL receives fair credit for our work.  If the data
are obtained for potential use in a publication or presentation,
CMDL should be informed at the outset of the nature of this work.
If the CMDL data are essential to the work, or if an important
result or conclusion depends on the CMDL data, co-authorship may
be appropriate.  This should be discussed at an early stage in
the work.  Manuscripts using the CMDL data should be sent to CMDL
for review before they are submitted for publication so we can
insure that the quality and limitations of the data are accurately
represented. 

Contact:   Tom Conway (303 497 6681; thomas.j.conway@noaa.gov)

 **************** RECIPROCITY AGREEMENT ****************
 
Use of these data implies an agreement to reciprocate.
Laboratories making similar measurements agree to make their
own data available to the general public and to the scientific
community in an equally complete and easily accessible form.
Modelers are encouraged to make available to the community,
upon request, their own tools used in the interpretation
of the CMDL data, namely well documented model code, transport
fields, and additional information necessary for other
scientists to repeat the work and to run modified versions.
Model availability includes collaborative support for new
users of the models.
 
***********************************************************
 
 
N20 1986 12  347.79 
N20 1987 01  348.63 
N20 1987 02  349.25 
N20 1987 03  349.66 
N20 1987 04  351.18 
N20 1987 05  352.42 
N20 1987 06  351.45 
N20 1987 07  349.47 
N20 1987 08  347.81 
N20 1987 09  346.92 
N20 1987 10  347.63 
N20 1987 11  349.08 
N20 1987 12  350.21 
N20 1988 01  351.51 
N20 1988 02  352.32 
N20 1988 03  353.05 
N20 1988 04  354.62 
N20 1988 05  355.11 
N20 1988 06  353.14 
N20 1988 07  350.45 
N20 1988 08  348.34 
N20 1988 09  347.43 
N20 1988 10  348.40 
N20 1988 11  349.98 
N20 1988 12  351.15 
N20 1989 01  352.51 
N20 1989 02  353.61 
N20 1989 03  354.34 
N20 1989 04  355.82 
N20 1989 05  356.65 
N20 1989 06  355.01 
N20 1989 07  352.38 
N20 1989 08  350.33 
N20 1989 09  349.44 
N20 1989 10  350.52 
N20 1989 11  352.59 
N20 1989 12  354.45 
N20 1990 01  356.17 
N20 1990 02  356.83 
N20 1990 03  356.98 
N20 1990 04  357.87 
N20 1990 05  357.83 
N20 1990 06  355.77 
N20 1990 07  353.47 
N20 1990 08  351.99 
N20 1990 09  351.66 
N20 1990 10  352.92 
N20 1990 11  354.45 
N20 1990 12  355.36 
N20 1991 01  356.43 
N20 1991 02  357.33 
N20 1991 03  358.00 
N20 1991 04  359.48 
N20 1991 05  360.27 
N20 1991 06  358.50 
N20 1991 07  355.64 
N20 1991 08  353.26 
N20 1991 09  351.97 
N20 1991 10  352.60 
N20 1991 11  354.22 
N20 1991 12  355.75 
N20 1992 01  357.53 
N20 1992 02  358.65 
N20 1992 03  359.46 
N20 1992 04  360.86 
N20 1992 05  361.01 
N20 1992 06  358.67 
N20 1992 07  355.75 
N20 1992 08  353.57 
N20 1992 09  352.73 
N20 1992 10  353.81 
N20 1992 11  355.45 
N20 1992 12  356.54 
N20 1993 01  357.71 
N20 1993 02  358.57 
N20 1993 03  359.14 
N20 1993 04  360.55 
N20 1993 05  361.31 
N20 1993 06  359.46 
N20 1993 07  356.41 
N20 1993 08  353.82 
N20 1993 09  352.49 
N20 1993 10  353.42 
N20 1993 11  355.68 
N20 1993 12  358.11 
N20 1994 01  360.57 
N20 1994 02  361.77 
N20 1994 03  362.48 
N20 1994 04 -999.99 
N20 1994 05 -999.99 
N20 1994 06 -999.99 
N20 1994 07  358.17 
N20 1994 08  356.03 
N20 1994 09  355.29 
N20 1994 10  356.55 
N20 1994 11  358.47 
N20 1994 12  359.93 
N20 1995 01  361.49 
N20 1995 02  362.59 
N20 1995 03  363.14 
N20 1995 04  364.33 
N20 1995 05  364.78 
N20 1995 06  362.79 
N20 1995 07  359.88 
N20 1995 08  357.67 
N20 1995 09  356.75 
N20 1995 10  357.86 
N20 1995 11  359.88 
N20 1995 12  361.51 
N20 1996 01  362.95 
N20 1996 02  363.58 
N20 1996 03  364.09 
N20 1996 04  365.60 
N20 1996 05  366.29 
N20 1996 06  364.74 
N20 1996 07  362.53 
N20 1996 08  360.73 
N20 1996 09  359.86 
N20 1996 10  360.61 
N20 1996 11  361.82 
N20 1996 12  362.64 
N20 1997 01  363.79 
N20 1997 02  364.82 
N20 1997 03  365.57 
N20 1997 04  367.02 
N20 1997 05  367.66 
N20 1997 06  365.66 
N20 1997 07  362.58 
N20 1997 08  360.12 
N20 1997 09  358.99 
N20 1997 10  360.06 
N20 1997 11  362.30 
N20 1997 12 -999.99 
N20 1998 01 -999.99 
N20 1998 02 -999.99 
N20 1998 03 -999.99 
N20 1998 04  369.64 
N20 1998 05  369.81 
N20 1998 06  367.81 
N20 1998 07  365.47 
N20 1998 08  363.94 
N20 1998 09  363.64 
N20 1998 10  365.07 
N20 1998 11  366.91 
N20 1998 12  368.18 
N20 1999 01  369.55 
N20 1999 02  370.57 
N20 1999 03  371.12 
N20 1999 04  372.31 
N20 1999 05  372.78 
N20 1999 06  370.88 
N20 1999 07  368.19 
N20 1999 08  366.28 
N20 1999 09  365.54 
N20 1999 10  366.52 
N20 1999 11  368.08 
N20 1999 12  369.01 
N20 2000 01  370.02 
N20 2000 02  370.70 
N20 2000 03  371.46 
N20 2000 04  373.10 
N20 2000 05  373.52 
N20 2000 06  371.26 
N20 2000 07  368.17 
N20 2000 08 -999.99 
N20 2000 09 -999.99 
N20 2000 10 -999.99 
N20 2000 11 -999.99 
N20 2000 12 -999.99 
N20 2001 01 -999.99 
N20 2001 02 -999.99 
N20 2001 03 -999.99 
N20 2001 04 -999.99 
N20 2001 05 -999.99 
N20 2001 06 -999.99 
N20 2001 07 -999.99 
N20 2001 08 -999.99 
N20 2001 09 -999.99 
N20 2001 10 -999.99 
N20 2001 11 -999.99 
N20 2001 12 -999.99 
N20 2002 01 -999.99 
N20 2002 02 -999.99 
N20 2002 03 -999.99 
N20 2002 04 -999.99 
N20 2002 05 -999.99 
N20 2002 06  375.22 
N20 2002 07  372.64 
N20 2002 08  370.61 
N20 2002 09  369.80 
N20 2002 10  370.96 
N20 2002 11  372.84 
N20 2002 12  374.33