File:Carbon14 with activity labels.svg

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Summary

Carbon-14-calibration.png

Description	English: Changes in the ¹⁴C record, which are primarily (but not exclusively) caused by changes in solar activity. Note that "before present" is used in the context of radiocarbon dating, where the "present" has been fixed at 1950. Italiano: Variazioni del Carbonio-14 negli ultimi 1200 anni
Date	28 February 2007 (first version); 21 November 2006 (last version)
Source	All data are from publicly available sources. (red trace) Carbon 14 record: http://www.radiocarbon.org/IntCal04%20files/intcal04.14c Transferred from en.wikipedia to Commons by User:Common Good using CommonsHelper.
Author	This figure was produced by Leland McInnes using gnuplot and is licensed under the GFDL. Original uploader was Leland McInnes at en.wikipedia. Later version(s) were uploaded by Dragons flight at en.wikipedia.
Permission ( Reusing this file)	Released under the GNU Free Documentation License

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Image title	Produced by GNUPLOT 4.1 patchlevel 0

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