MLO (SIO) Data Changes

Derek, who has recently spent much time and effort looking over the MLO carbon dioxide measurements and data, kindly supplied a number of data sets of differing dates.  I simply took the differences between sets, referencing to the latest (17 December 2008) release, and plotted them out.

I believe that the major adjustments are documented. One thing that draws question is how the apparently random differences mostly prior to 1973 were corrected?

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