Sunspot drawing of 1984-2-21

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https://doi.org/10.7891/e-manuscripta-140996



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1984-02-21
08:00
Hs 1304.6:942
https://doi.org/10.7891/e-manuscripta-140996
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 2 2 A -19 152
35 53 54 D 15 114
36 13 18 D 10 89
37 4 5 C -6 198
4 72 79