Sunspot drawing of 1997-4-18

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https://doi.org/10.7891/e-manuscripta-149717



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1997-04-18
07:15
Hs 1304.6:4971
https://doi.org/10.7891/e-manuscripta-149717
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 2 2 A -23 113
1 2 2