Sunspot drawing of 1997-4-11

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https://doi.org/10.7891/e-manuscripta-149684



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1997-04-11
07:30
Hs 1304.6:4964
https://doi.org/10.7891/e-manuscripta-149684
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
20 4 3 A -29 208
21 9 20 D 23 217
2 13 23