Sunspot drawing of 1987-1-4

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https://doi.org/10.7891/e-manuscripta-143045



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1987-01-04
09:45
Hs 1304.6:1797
https://doi.org/10.7891/e-manuscripta-143045
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
1 7 9 C 6 13
1 7 9