Sunspot drawing of 1973-7-20

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https://doi.org/10.7891/e-manuscripta-97453



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1973-07-20
06:30
Hs 1304.5:5122
https://doi.org/10.7891/e-manuscripta-97453
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
153 3 B 12.4 152.2
1 3