Sunspot drawing of 1974-12-18

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https://doi.org/10.7891/e-manuscripta-97944



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1974-12-18
09:00
Hs 1304.5:5561
https://doi.org/10.7891/e-manuscripta-97944
Observer : Araldo Pittini
Seeing (SIDC) : 1
Group Not Weighted Weighted Type Latitude Carrington Longit.
196 10 B 11.6 173.1
197 5 H 12.1 103.0
201 6 J 5.3 33.3
3 21