Sunspot drawing of 1998-4-18

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https://doi.org/10.7891/e-manuscripta-149970



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1998-04-18
07:00
Hs 1304.6:5284
https://doi.org/10.7891/e-manuscripta-149970
Observer : Michele Bianda
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
69 3 3 B 31 309
73 6 14 D 20 313
2 9 17