Sunspot drawing of 1973-1-28

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https://doi.org/10.7891/e-manuscripta-97554



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1973-01-28
08:30
Hs 1304.5:4968
https://doi.org/10.7891/e-manuscripta-97554
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
25 2 A 9.4 242.5
30 2 A 11.4 151.0
2 4