Sunspot drawing of 1969-8-21

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https://doi.org/10.7891/e-manuscripta-95958



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1969-08-21
09:30
Hs 1304.5:3928
https://doi.org/10.7891/e-manuscripta-95958
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
342 2 A 9.5 287.7
348 8 B -13.9 249.7
355 3 A -16.5 191.1
356 1 A -6.0 212.2
357 3 J 12.4 128.5
5 17