Sunspot drawing of 1997-4-15

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https://doi.org/10.7891/e-manuscripta-149793



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1997-04-15
07:00
Hs 1304.6:4968
https://doi.org/10.7891/e-manuscripta-149793
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
22 7 12 D -30 195
23 11 14 C -22 113
2 18 26