Sunspot drawing of 1975-3-31

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https://doi.org/10.7891/e-manuscripta-98145



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1975-03-31
08:00
Hs 1304.5:5640
https://doi.org/10.7891/e-manuscripta-98145
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 4 A -0.3 167.6
1 4