Sunspot drawing of 1971-8-31

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https://doi.org/10.7891/e-manuscripta-96842



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1971-08-31
07:00
Hs 1304.5:4558
https://doi.org/10.7891/e-manuscripta-96842
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
256 3 J -3.8 235.8
257A 2 A -9.3 234.5
2 5