Sunspot drawing of 1983-4-17

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https://doi.org/10.7891/e-manuscripta-140447



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1983-04-17
07:30
Hs 1304.6:680
https://doi.org/10.7891/e-manuscripta-140447
Observer : Michele Bianda
Seeing (SIDC) : 5
Group Not Weighted Weighted Type Latitude Carrington Longit.
89 1 1 A -15 278
94 16 14 B -7 287
97 16 15 C 7 232
98 12 17 C -29 310
99 7 7 B -10 272
5 52 54