Sunspot drawing of 1972-3-28

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https://doi.org/10.7891/e-manuscripta-97030



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1972-03-28
07:00
Hs 1304.5:4711
https://doi.org/10.7891/e-manuscripta-97030
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 7 C 7.7 334.6
97 1 A -21.1 345.2
105 3 J -7.0 201.7
3 11