Sunspot drawing of 1974-4-26

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https://doi.org/10.7891/e-manuscripta-97764



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1974-04-26
06:30
Hs 1304.5:5354
https://doi.org/10.7891/e-manuscripta-97764
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
51 22 D -8.9 350.4
1 22