Sunspot drawing of 1977-4-22

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https://doi.org/10.7891/e-manuscripta-98715



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1977-04-22
07:00
Hs 1304.5:6272
https://doi.org/10.7891/e-manuscripta-98715
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 8 C -19.7 24.6
34 4 B -22.0 13.6
2 12