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. 2016 Jul 13;11(7):e0157144. doi: 10.1371/journal.pone.0157144

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© 2016 Manning et al

This is an open access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are credited.

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Fig 4 — Errors bars show 95.4% probability ranges. In all but one case, OxA-30897 & OxA-31521 from MBA relative rings (RY) 677–685, the data on the identical tree-rings are compatible to be combined as weighted averages to give the best available estimates of the appropriate ¹⁴C age [60]. Dates on the same or similar (site or time interval) tree-rings measured at different laboratories also show good agreement.