File:AYool CCl4 history.png

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Description	English: Time series of atmospheric concentrations of carbon tetrachloride from 1908 to 2003. Mixing ratio concentrations are shown for the northern and southern hemispheres, and are expressed as parts per trillion (ppt). The data are plotted here using MATLAB. The published source of data for the figure is Walker, S. J., R. F. Weiss & P. K. Salameh (2000) Reconstructed histories of the annual mean atmospheric mole fractions for the halocarbons CFC-11, CFC-12, CFC-113 and carbon tetrachloride. Journal of Geophysical Research 105, 14285—14296. The data (including error estimates and updates) are available online from the atmospheric halocarbon page at University of California.
Date	22 March 2007 (original upload date)
Source	Transferred from en.wikipedia; transferred to Commons by User:Teratornis using CommonsHelper.
Author	Original uploader was Plumbago at en.wikipedia
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	This file is licensed under the Creative Commons Attribution-Share Alike 3.0 Unported license.
	Attribution: Plumbago at en.wikipedia
	You are free: to share – to copy, distribute and transmit the work to remix – to adapt the work Under the following conditions: attribution – You must attribute the work in the manner specified by the author or licensor (but not in any way that suggests that they endorse you or your use of the work). share alike – If you alter, transform, or build upon this work, you may distribute the resulting work only under the same or similar license to this one.
	This licensing tag was added to this file as part of the GFDL licensing update.CC-BY-SA-3.0 truetrue

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Attribution: Plumbago at en.wikipedia

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Carbon tetrachloride

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File change date and time	11:17, 22 March 2007
Horizontal resolution	118.11 dpc
Vertical resolution	118.11 dpc

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