File:Toms-sulfur-from-volcanos-1979-2003.gif

derived data visualisation from this image:

this image was created on my own using open office 2.x; Author: Alexander Stohr

all data used is estimated from the above image. this does mean an error of about 15% for any result in vertical direction. as its the purpose of just showing the sums and peaks for the years (in contrast of the image with logarithmical bargraphs for any event) this should not matter that much.

this image is useable for comparing with temperatures as measured in recent years.

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