Sunspot drawing of 1971-2-11

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https://doi.org/10.7891/e-manuscripta-96685



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1971-02-11
08:45
Hs 1304.5:4376
https://doi.org/10.7891/e-manuscripta-96685
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
38 2 5 J -6.3 14.0
42 1 3 A 18.1 297.5
43 15 7 B 13.6 331.7
45 2 1 A -22.4 8.5
46 2 2 A -21.2 349.9
47 1 2 A -9.6 305.3
6 23 20