Sunspot drawing of 1974-12-30

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https://doi.org/10.7891/e-manuscripta-97829



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1974-12-30
10:45
Hs 1304.5:5573
https://doi.org/10.7891/e-manuscripta-97829
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
210 2 A 13.2 4.4
211 8 D -8.6 242.5
2 10