Sunspot drawing of 1997-7-21

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https://doi.org/10.7891/e-manuscripta-149666



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1997-07-21
07:45
Hs 1304.6:5052
https://doi.org/10.7891/e-manuscripta-149666
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
52 3 2 B 17 276
1 3 2