Sunspot drawing of 1975-2-21

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https://doi.org/10.7891/e-manuscripta-98119



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1975-02-21
13:30
Hs 1304.5:5613
https://doi.org/10.7891/e-manuscripta-98119
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 2 A 8.1 342.3
1 2