Sunspot drawing of 1977-6-21

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https://doi.org/10.7891/e-manuscripta-98796



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1977-06-21
08:00
Hs 1304.5:6317
https://doi.org/10.7891/e-manuscripta-98796
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
58 3 A 19.2 211.0
59 23 C -22.5 203.4
2 26