Sunspot drawing of 1969-10-17

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https://doi.org/10.7891/e-manuscripta-95807



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1969-10-17
08:15
Hs 1304.5:3982
https://doi.org/10.7891/e-manuscripta-95807
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
421 4 J 10.5 256.7
425 8 C -4.8 240.5
428 1 A 3.7 169.8
429 1 A 25.7 134.0
430 1 A -30.9 195.4
5 15