Sunspot drawing of 1987-10-7

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https://doi.org/10.7891/e-manuscripta-142853



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1987-10-07
09:00
Hs 1304.6:2034
https://doi.org/10.7891/e-manuscripta-142853
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
105 1 1 A -24 336
106 18 26 C 31 331
107 7 11 B 34 295
3 26 38