Sunspot drawing of 1987-6-30

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https://doi.org/10.7891/e-manuscripta-142878



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1987-06-30
08:00
Hs 1304.6:1942
https://doi.org/10.7891/e-manuscripta-142878
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
59 1 3 J 20 261
61 1 1 A 28 166
64 3 2 B 30 149
3 5 6