Sunspot drawing of 1969-8-17

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https://doi.org/10.7891/e-manuscripta-95810



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1969-08-17
07:00
Hs 1304.5:3924
https://doi.org/10.7891/e-manuscripta-95810
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
342 6 C 7.8 285.9
348 34 C -13.3 252.6
352 1 A -16.8 241.2
3 41