Sunspot drawing of 1987-1-18

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https://doi.org/10.7891/e-manuscripta-143052



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1987-01-18
09:45
Hs 1304.6:1808
https://doi.org/10.7891/e-manuscripta-143052
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
4A 4 4 B -25 127
5 1 1 A 12 134
2 5 5