Sunspot drawing of 1998-5-20

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https://doi.org/10.7891/e-manuscripta-149922



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1998-05-20
07:30
Hs 1304.6:5312
https://doi.org/10.7891/e-manuscripta-149922
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 17 20 C 22 279
92 11 9 B -27 283
93 2 2 A -17 306
95 3 2 B 28 278
4 33 33