Sunspot drawing of 1976-4-28

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https://doi.org/10.7891/e-manuscripta-98547



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1976-04-28
07:45
Hs 1304.5:5974
https://doi.org/10.7891/e-manuscripta-98547
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 10 J -10.4 39.7
22 8 B 2.2 358.5
2 18