Sunspot drawing of 1997-4-4

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https://doi.org/10.7891/e-manuscripta-149653



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1997-04-04
07:30
Hs 1304.6:4957
https://doi.org/10.7891/e-manuscripta-149653
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 4 5 C -23 295
19 10 12 C -22 289
20 2 5 C -28 213
3 16 22