Sunspot drawing of 1983-11-20

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https://doi.org/10.7891/e-manuscripta-140524



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1983-11-20
10:45
Hs 1304.6:864
https://doi.org/10.7891/e-manuscripta-140524
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
302 4 4 A -14 332
303A 4 3 A 0 291
2 8 7