Duncan Craig Wrote:
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> I see. Thanks. Yes, the situation is better than
> I thought,...but not as good as I had hoped ;-)
> Interesting new tools emerging.

Yes, It will get better as they get more precise data from different locations in Mesoamerica. The Oxygen isotope ratios are less precise than the Strontium, apparently they can go to four significant figures reliably on that ratio.

Bernard