Sunspot drawing of 1986-2-28

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https://doi.org/10.7891/e-manuscripta-142025



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1986-02-28
08:30
Hs 1304.6:1535
https://doi.org/10.7891/e-manuscripta-142025
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
7 5 4 B 0 147
1 5 4