Sunspot drawing of 1977-12-31

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https://doi.org/10.7891/e-manuscripta-98672



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1977-12-31
09:00
Hs 1304.5:6485
https://doi.org/10.7891/e-manuscripta-98672
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
183 8 C 19.6 250.3
184 27 D 19.4 235.7
186 15 D -18.8 203.8
187/189 19 C -18.3 179.5
4 69