Sunspot drawing of 1974-8-28

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https://doi.org/10.7891/e-manuscripta-97761



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1974-08-28
07:30
Hs 1304.5:5467
https://doi.org/10.7891/e-manuscripta-97761
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
138 3 J 1.3 182.1
1 3