Sunspot drawing of 1971-12-28

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https://doi.org/10.7891/e-manuscripta-96672



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1971-12-28
08:45
Hs 1304.5:4664
https://doi.org/10.7891/e-manuscripta-96672
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
364 4 J -14.0 113.7
369 10 C -15.2 97.0
370 3 B -10.3 91.0
375 10 B -13.8 44.5
376 1 A 16.3 107.2
378 3 J 21.5 330.5
379 3 J -4.0 328.1
380 1 A -22.3 86.8
381 1 A -7.0 357.8
9 36