# file: lef_SF6_MM.dat # # Atmospheric measurements of SF6 (Sulphur Hexaflouride) # # Measurements are from the NOAA/ESRL/GMD/HATS flask program # (http://www.esrl.noaa.gov/gmd/hats/flask/flasks.html). # Instrument ID: Otto # # Location: LEF -- Park Falls, Wisconsin -- 45.95 N, 90.27 W, 472 m Elev. # See http://www.esrl.noaa.gov/gmd/dv/site/site_table.html#hats_flask for # more information about flask sampling sites. # # The data reported are from samples collected approximately once per week in # matching, concurrent, flask pairs and later analyzed on a gas chromatograph # with electron capture detection (GC-ECD) located in Boulder, Colorado, USA. # This system uses two standard reference gases for calibration and has been # in operation since very early in 1995. # # These data represent monthly mean estimates computed using those data marked # with a 0 in flag column 7 of the companion file named "lef_SF6_All.dat". With # flask samples collected only weekly on average, monthly sampling statistics # are poor at best. As a result, the error reported is either the standard # deviation of the mean or a floor single-sample precision estimate. # # PIs: Dr. James W. Elkins, Dr. Bradley D. Hall, # Debra J. Mondeel, J. David Nance # # National Oceanic and Atmospheric Administration (NOAA) # Earth System Research Laboratory (ESRL) # 325 Broadway, R/GMD1 # Boulder, CO 80305-3328 # # Email: James.W.Elkins@noaa.gov; Bradley.Hall@noaa.gov # Phone: (303) 497-6224 (303) 497-7011 # # Email: Debra.J.Mondeel@noaa.gov; David.Nance@noaa.gov # Phone: (303) 497-6013 (303) 497-7002 # # Fax: (303) 497-6290 # # Data use policy: # If you use this data in a publication or report, we would appreciate that you # contact the principal investigators (PIs) first and discuss your interests. # The PIs can discuss the quality of the data and any potential problems with # its analysis. Please contact the PIs for more information. The data should # be cited in presentations or publications along the following lines: Sulphur Hexaflouride # data from the NOAA/ESRL halocarbons flask program. # # Calibration scale: NOAA 2014 # See http://www.esrl.noaa.gov/gmd/ccl/scales.html for more information about # calibration scales. # # Units: ppt # # Missing value: "nan" # # Data Columns: # yr Year # mon Month # m Monthly mean concentration of SF6 in ppt # sd Standard deviation of the mean (or single-sample precision value) # n Number of samples # SF6ottoLEFyr SF6ottoLEFmon SF6ottoLEFm SF6ottoLEFsd SF6ottoLEFn 1996 1 nan nan 0 1996 2 nan nan 0 1996 3 nan nan 0 1996 4 nan nan 0 1996 5 nan nan 0 1996 6 nan nan 0 1996 7 nan nan 0 1996 8 3.970 0.099 1 1996 9 nan nan 0 1996 10 4.440 0.106 1 1996 11 nan nan 0 1996 12 4.140 0.082 1 1997 1 nan nan 0 1997 2 4.140 0.082 1 1997 3 4.240 0.095 1 1997 4 nan nan 0 1997 5 4.220 0.195 1 1997 6 4.280 0.177 1 1997 7 4.140 0.087 1 1997 8 nan nan 0 1997 9 4.190 0.067 1 1997 10 nan nan 0 1997 11 4.220 0.109 1 1997 12 4.320 0.081 1 1998 1 4.250 0.054 2 1998 2 4.270 0.052 1 1998 3 nan nan 0 1998 4 4.300 0.061 1 1998 5 4.465 0.092 2 1998 6 4.356 0.063 3 1998 7 4.255 0.065 2 1998 8 4.504 0.059 2 1998 9 4.380 0.086 1 1998 10 4.320 0.101 1 1998 11 4.559 0.141 2 1998 12 4.620 0.078 1 1999 1 4.490 0.084 1 1999 2 4.635 0.123 3 1999 3 4.600 0.072 1 1999 4 4.390 0.072 1 1999 5 4.511 0.088 2 1999 6 4.487 0.072 4 1999 7 4.519 0.078 2 1999 8 4.460 0.070 1 1999 9 4.596 0.123 3 1999 10 4.638 0.163 2 1999 11 4.581 0.086 2 1999 12 4.864 0.113 2 2000 1 4.650 0.093 1 2000 2 4.869 0.514 3 2000 3 5.024 0.750 2 2000 4 4.717 0.073 3 2000 5 4.793 0.064 3 2000 6 4.710 0.109 1 2000 7 4.807 0.066 3 2000 8 4.757 0.047 3 2000 9 4.824 0.079 3 2000 10 4.820 0.077 1 2000 11 4.949 0.237 3 2000 12 4.907 0.071 2 2001 1 4.953 0.071 3 2001 2 4.867 0.051 3 2001 3 4.859 0.056 2 2001 4 4.999 0.162 3 2001 5 4.956 0.038 4 2001 6 5.065 0.186 3 2001 7 4.948 0.066 5 2001 8 5.254 0.680 4 2001 9 4.967 0.063 3 2001 10 5.165 0.340 4 2001 11 5.079 0.064 3 2001 12 5.804 0.849 2 2002 1 5.172 0.188 4 2002 2 5.098 0.051 3 2002 3 5.164 0.141 4 2002 4 5.299 0.101 3 2002 5 5.386 0.247 4 2002 6 5.289 0.182 4 2002 7 5.315 0.267 4 2002 8 5.212 0.071 3 2002 9 5.229 0.105 4 2002 10 5.277 0.069 5 2002 11 5.232 0.061 3 2002 12 5.421 0.090 3 2003 1 5.308 0.061 4 2003 2 5.342 0.056 2 2003 3 5.329 0.054 4 2003 4 5.387 0.068 4 2003 5 5.418 0.074 5 2003 6 5.440 0.091 4 2003 7 5.415 0.063 4 2003 8 5.449 0.077 4 2003 9 5.475 0.126 4 2003 10 5.515 0.099 3 2003 11 5.470 0.075 2 2003 12 5.545 0.054 3 2004 1 5.521 0.047 3 2004 2 5.649 0.065 2 2004 3 5.694 0.171 4 2004 4 5.566 0.062 3 2004 5 5.581 0.041 4 2004 6 5.600 0.049 4 2004 7 5.609 0.060 4 2004 8 5.630 0.150 3 2004 9 5.643 0.101 4 2004 10 5.923 0.195 4 2004 11 5.847 0.295 4 2004 12 5.790 0.069 5 2005 1 5.753 0.086 3 2005 2 5.835 0.185 5 2005 3 5.929 0.163 2 2005 4 5.798 0.042 4 2005 5 6.198 1.664 5 2005 6 5.790 0.062 3 2005 7 5.886 0.053 4 2005 8 5.964 0.458 5 2005 9 5.876 0.062 4 2005 10 6.023 0.145 4 2005 11 5.948 0.040 4 2005 12 5.971 0.068 2 2006 1 6.105 0.203 3 2006 2 5.983 0.051 4 2006 3 6.088 0.141 3 2006 4 6.273 0.217 3 2006 5 6.094 0.061 4 2006 6 6.082 0.049 4 2006 7 6.129 0.085 4 2006 8 6.111 0.054 4 2006 9 6.074 0.075 3 2006 10 6.116 0.040 4 2006 11 6.180 0.149 5 2006 12 6.221 0.040 3 2007 1 6.220 0.055 3 2007 2 6.238 0.049 4 2007 3 6.376 0.257 4 2007 4 6.310 0.069 3 2007 5 6.398 0.141 2 2007 6 6.372 0.070 4 2007 7 6.399 0.101 4 2007 8 6.403 0.043 4 2007 9 6.482 0.182 4 2007 10 6.522 0.145 4 2007 11 6.491 0.073 3 2007 12 6.503 0.057 3 2008 1 6.516 0.108 3 2008 2 6.544 0.069 4 2008 3 6.528 0.045 4 2008 4 6.601 0.059 5 2008 5 6.676 0.091 3 2008 6 6.695 0.059 4 2008 7 6.654 0.061 4 2008 8 6.812 0.161 4 2008 9 6.678 0.051 2 2008 10 6.820 0.154 5 2008 11 7.047 0.136 4 2008 12 6.856 0.134 5 2009 1 6.862 0.060 2 2009 2 6.992 0.318 4 2009 3 6.926 0.190 4 2009 4 6.909 0.066 4 2009 5 6.896 0.063 2 2009 6 6.899 0.061 3 2009 7 6.954 0.062 3 2009 8 6.961 0.052 4 2009 9 6.970 0.052 4 2009 10 7.076 0.084 4 2009 11 7.258 0.225 3 2009 12 7.082 0.043 3 2010 1 7.108 0.096 3 2010 2 7.114 0.063 4 2010 3 7.187 0.156 3 2010 4 7.396 0.274 4 2010 5 7.254 0.130 4 2010 6 7.245 0.056 4 2010 7 7.277 0.071 3 2010 8 7.385 0.141 2 2010 9 7.233 0.057 3 2010 10 7.350 0.102 4 2010 11 7.448 0.068 3 2010 12 7.388 0.059 3 2011 1 7.377 0.071 4 2011 2 7.444 0.132 3 2011 3 7.451 0.072 4 2011 4 7.447 0.057 3 2011 5 7.479 0.046 4 2011 6 7.541 0.068 2 2011 7 7.527 0.070 3 2011 8 7.526 0.119 3 2011 9 7.647 0.105 3 2011 10 7.620 0.073 3 2011 11 7.686 0.042 3 2011 12 7.660 0.099 1 2012 1 7.698 0.079 2 2012 2 7.777 0.118 4 2012 3 7.722 0.085 4 2012 4 7.753 0.044 3 2012 5 7.836 0.057 3 2012 6 7.782 0.036 4 2012 7 7.731 0.065 3 2012 8 7.793 0.069 3 2012 9 7.843 0.075 3 2012 10 7.886 0.048 3 2012 11 7.935 0.075 2 2012 12 7.921 0.096 2 2013 1 7.991 0.046 2 2013 2 8.010 0.052 3 2013 3 8.015 0.055 3 2013 4 8.041 0.054 3 2013 5 8.107 0.069 4 2013 6 8.340 0.120 1 2013 7 8.134 0.066 3 2013 8 8.140 0.078 1 2013 9 8.114 0.092 3 2013 10 nan nan 0 2013 11 nan nan 0 2013 12 nan nan 0 2014 1 nan nan 0 2014 2 nan nan 0 2014 3 nan nan 0 2014 4 nan nan 0 2014 5 nan nan 0 2014 6 nan nan 0 2014 7 nan nan 0 2014 8 nan nan 0 2014 9 nan nan 0 2014 10 nan nan 0 2014 11 nan nan 0 2014 12 nan nan 0 2015 1 nan nan 0 2015 2 nan nan 0 2015 3 nan nan 0 2015 4 nan nan 0 2015 5 nan nan 0 2015 6 nan nan 0 2015 7 nan nan 0 2015 8 nan nan 0 2015 9 nan nan 0 2015 10 nan nan 0 2015 11 nan nan 0 2015 12 nan nan 0 2016 1 nan nan 0 2016 2 nan nan 0 2016 3 nan nan 0 2016 4 nan nan 0 2016 5 nan nan 0 2016 6 nan nan 0 2016 7 nan nan 0 2016 8 nan nan 0 2016 9 nan nan 0 2016 10 nan nan 0 2016 11 nan nan 0 2016 12 nan nan 0