Sunspot drawing of 1983-3-21

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https://doi.org/10.7891/e-manuscripta-140432



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1983-03-21
08:15
Hs 1304.6:659
https://doi.org/10.7891/e-manuscripta-140432
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
66 41 36 D -12 304
67 16 16 C -7 282
68 2 3 J -11 270
70 1 3 J -13 232
72 11 7 B -13 261
5 71 65