Sunspot drawing of 1971-11-20

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https://doi.org/10.7891/e-manuscripta-96699



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1971-11-20
09:00
Hs 1304.5:4631
https://doi.org/10.7891/e-manuscripta-96699
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
320 7 H -13.7 189.7
326 3 J -5.8 133.7
327 10 B -12.8 197.4
3 20