CFC-11 calibration standards 1993 scale
updated: July, 2000
year prepared assigned residual
    ppt ppt ppt
ALM-38408 1993 25.5 25.0 -0.47
ALM-26735 1993 75.2 76.1 0.97
ALM-26738 1993 76.2 77.2 0.99
ALM-26743 1993 288.0 287.4 -0.63
ALM-26737 1993 313.6 313.8 0.18
CLM-2431 1991 49.5 48.8 -0.72
CLM-2482 1991 69.2 69.3 0.05
CLM-2413 1991 136.3 135.3 -1.02
FF-30082 1988 189.4 189.2 -0.15
std dev 0.73

Note that the 1993 CFC-11 scale has been incorrectly referred to as the 1992 scale in some documents. It is the 1993 scale.