Abstract
It is shown that the east-west asymmetry is quite different for spot-groups of different classes of evolution and that there exists a conspicuous difference between the ascending and descending branches with regard to the east-west asymmetry and the asymmetry between corresponding lunes. Some results point to the existence of systematic errors in the classification of the spot-groups.
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Bartsch, R. The east-west asymmetry in the number of spot-groups in relation to their classification. Sol Phys 30, 93–102 (1973). https://doi.org/10.1007/BF00156177
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DOI: https://doi.org/10.1007/BF00156177