Assertion: cosmic ray's atom | /r/CapableOf | agree with global carbon budget
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text: The rate of 14C production can be modelled, yielding values of 16,400 or 18,800 atoms of 14C per second per square meter of the Earth's surface, which agrees with the global carbon budget that can be used to backtrack, but attempts to measure the production time directly in situ were not very successful.