Sunspot drawing of 1971-2-9

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https://doi.org/10.7891/e-manuscripta-96702



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1971-02-09
08:30
Hs 1304.5:4374
https://doi.org/10.7891/e-manuscripta-96702
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
38 3 J -6.6 14.0
39 5 C 25.5 45.8
42 3 J 18.4 297.8
43 9 B 13.8 332.1
4 20