Sunspot drawing of 1972-8-20

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https://doi.org/10.7891/e-manuscripta-97006



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1972-08-20
08:30
Hs 1304.5:4845
https://doi.org/10.7891/e-manuscripta-97006
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
274 12 D 13.9 240.3
275 8 J -24.9 166.0
279 6 C -12.3 183.3
280 10 C -4.7 109.0
4 36