Sunspot drawing of 1986-10-20

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https://doi.org/10.7891/e-manuscripta-142268



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1986-10-20
08:15
Hs 1304.6:1732
https://doi.org/10.7891/e-manuscripta-142268
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
56 36 62 E 23 232
57 1 3 J -28 191
2 37 65