Sunspot drawing of 1974-12-23

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https://doi.org/10.7891/e-manuscripta-97862



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1974-12-23
09:00
Hs 1304.5:5566
https://doi.org/10.7891/e-manuscripta-97862
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
197 4 H 12.9 104.8
201 14 J 4.9 35.1
206 1 A 11.5 51.0
207 3 B 5.1 68.5
4 22