Sunspot drawing of 1987-1-2

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https://doi.org/10.7891/e-manuscripta-142823



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1987-01-02
09:00
Hs 1304.6:1795
https://doi.org/10.7891/e-manuscripta-142823
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
1 8 17 C 6 13
1 8 17