Sunspot drawing of 1987-1-6

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https://doi.org/10.7891/e-manuscripta-143050



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1987-01-06
10:00
Hs 1304.6:1799
https://doi.org/10.7891/e-manuscripta-143050
Observer : Marco Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
1 3 4 C 6 13
1 3 4