Sunspot drawing of 1974-3-28

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https://doi.org/10.7891/e-manuscripta-97890



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1974-03-28
09:00
Hs 1304.5:5325
https://doi.org/10.7891/e-manuscripta-97890
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 3 J -9.3 54.9
36 2 A 7.5 39.3
2 5