Sunspot drawing of 1987-6-28

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https://doi.org/10.7891/e-manuscripta-142900



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1987-06-28
08:00
Hs 1304.6:1940
https://doi.org/10.7891/e-manuscripta-142900
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
58 1 2 A -31 252
59 3 7 C 20 260
61 2 7 C 30 154
62 1 1 A -35 249
63 2 4 B -31 224
5 9 21