Sunspot drawing of 1977-2-25

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https://doi.org/10.7891/e-manuscripta-98868



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1977-02-25
09:45
Hs 1304.5:6227
https://doi.org/10.7891/e-manuscripta-98868
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 3 J -19.4 55.3
1 3