Sunspot drawing of 1983-10-21

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https://doi.org/10.7891/e-manuscripta-140460



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1983-10-21
08:30
Hs 1304.6:840
https://doi.org/10.7891/e-manuscripta-140460
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
279 1 3 J -4 18
283 1 2 A -7 252
2 2 5