Sunspot drawing of 1975-9-21

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https://doi.org/10.7891/e-manuscripta-98037



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1975-09-21
07:00
Hs 1304.5:5794
https://doi.org/10.7891/e-manuscripta-98037
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
89 14 B 9.2 87.4
90 5 B 3.1 86.3
91 1 A -16.1 58.4
92 7 B 6.1 25.8
4 27