Sunspot drawing of 1974-8-22

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https://doi.org/10.7891/e-manuscripta-97758



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1974-08-22
10:45
Hs 1304.5:5461
https://doi.org/10.7891/e-manuscripta-97758
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
135 3 J -14.7 255.5
137 17 C -11.8 261.0
138 7 J 1.6 182.7
3 27