Sunspot drawing of 1974-12-15

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https://doi.org/10.7891/e-manuscripta-97732



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1974-12-15
08:30
Hs 1304.5:5558
https://doi.org/10.7891/e-manuscripta-97732
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
196 32 B 11.3 173.0
197 6 H 12.7 104.6
2 38