Sunspot drawing of 1974-10-28

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https://doi.org/10.7891/e-manuscripta-97844



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1974-10-28
07:30
Hs 1304.5:5521
https://doi.org/10.7891/e-manuscripta-97844
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
172 3 J -5.8 26.8
173 11 C -13.4 37.0
174 3 A 6.2 52.3
175 3 A 5.2 0.9
4 20