Sunspot drawing of 1975-3-21

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https://doi.org/10.7891/e-manuscripta-98109



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1975-03-21
08:00
Hs 1304.5:5633
https://doi.org/10.7891/e-manuscripta-98109
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
31 6 B 5.8 33.4
1 6