Sunspot drawing of 1977-8-10

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https://doi.org/10.7891/e-manuscripta-98875



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1977-08-10
07:15
Hs 1304.5:6365
https://doi.org/10.7891/e-manuscripta-98875
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
87 20 D 23.5 328.0
89 5 B -16.9 8.2
2 25