Sunspot drawing of 1974-11-20

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https://doi.org/10.7891/e-manuscripta-97759



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1974-11-20
10:00
Hs 1304.5:5536
https://doi.org/10.7891/e-manuscripta-97759
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
188 12 C 12.6 99.4
189 6 B 0.7 73.9
190 4 B 6.2 47.3
3 22