Sunspot drawing of 1986-3-20

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https://doi.org/10.7891/e-manuscripta-142277



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1986-03-20
09:00
Hs 1304.6:1551
https://doi.org/10.7891/e-manuscripta-142277
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
13 9 6 B -12 240
1 9 6