Sunspot drawing of 1997-4-19

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https://doi.org/10.7891/e-manuscripta-149598



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1997-04-19
07:30
Hs 1304.6:4972
https://doi.org/10.7891/e-manuscripta-149598
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 1 1 A -23 110
24 3 2 B 21 81
2 4 3