Sunspot drawing of 1977-4-26

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https://doi.org/10.7891/e-manuscripta-98754



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1977-04-26
07:00
Hs 1304.5:6276
https://doi.org/10.7891/e-manuscripta-98754
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
35 1 A 15.2 241.8
36 3 J -21.8 199.3
2 4