Sunspot drawing of 1984-12-4

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https://doi.org/10.7891/e-manuscripta-141152



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1984-12-04
08:30
Hs 1304.6:1175
https://doi.org/10.7891/e-manuscripta-141152
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
227 4 4 B -7 290
228 3 2 B -8 263
229 12 16 C 18 261
3 19 22