Sunspot drawing of 1977-12-28

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https://doi.org/10.7891/e-manuscripta-98647



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1977-12-28
09:00
Hs 1304.5:6482
https://doi.org/10.7891/e-manuscripta-98647
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
179 5 J 22.5 325.3
183 3 B 18.8 253.4
184 9 C 19.9 239.2
186 12 D -18.5 202.8
4 29