Sunspot drawing of 1997-5-21

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https://doi.org/10.7891/e-manuscripta-149618



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1997-05-21
07:30
Hs 1304.6:5001
https://doi.org/10.7891/e-manuscripta-149618
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
30 42 45 E 5 16
33 13 15 C 28 71
34 2 4 J -34 309
35 3 3 B 2 2
4 60 67