Sunspot drawing of 1998-4-23

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https://doi.org/10.7891/e-manuscripta-150151



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1998-04-23
12:00
Hs 1304.6:5289
https://doi.org/10.7891/e-manuscripta-150151
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
73 8 9 C 21 313
76 1 1 A 18 192
77 4 3 B -21 240
78 4 2 A -26 215
4 17 15