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A Worldwide Solar Observing Network, Magnetic Sunspot Classifications
after Zürich/McIntosh, converted to CV, a numerical system

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Magnetic classifications of sunspots
based on the Zürich/McIntosh-system:
Classification Values (CV)
derived by Kjell Inge Malde on 15 Aug 1981 is:
"A 'sunspot count' derived using weighting of
Zürich (Modified) McIntosh classifications":
"The 'CV' intends to measure the variety
of sunspot region classifications
with respect to their ability of survival,
typical life styles, complexity, structure, polarity,
size and elongation on the solar disk."

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Last edit 13.04.2021

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