Sunspot drawing of 1999-4-28

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https://doi.org/10.7891/e-manuscripta-150511



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1999-04-28
12:00
Hs 1304.6:5609
https://doi.org/10.7891/e-manuscripta-150511
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
97 1 3 J -13 108
100 9 9 B 31 39
101 5 9 C 16 32
102 17 27 E 21 33
4 32 48