Sunspot drawing of 1986-4-28

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https://doi.org/10.7891/e-manuscripta-142124



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1986-04-28
13:45
Hs 1304.6:1573
https://doi.org/10.7891/e-manuscripta-142124
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 8 20 D 3 119
1 8 20