Sunspot drawing of 1977-7-20

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https://doi.org/10.7891/e-manuscripta-98886



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1977-07-20
08:00
Hs 1304.5:6345
https://doi.org/10.7891/e-manuscripta-98886
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
X 14.4 142.0
72 1 A -27.2 265.6
74 3 J 14.8 146.6
2 4