Sunspot drawing of 1997-4-2

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https://doi.org/10.7891/e-manuscripta-149581



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1997-04-02
07:30
Hs 1304.6:4955
https://doi.org/10.7891/e-manuscripta-149581
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 12 11 C -24 295
19 9 8 B -23 288
20 2 4 J -28 213
3 23 23