Sunspot drawing of 1987-2-28

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https://doi.org/10.7891/e-manuscripta-142804



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1987-02-28
10:30
Hs 1304.6:1837
https://doi.org/10.7891/e-manuscripta-142804
Observer : Marco Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
12 1 3 J 38 313
1 1 3