Sunspot drawing of 1985-2-20

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https://doi.org/10.7891/e-manuscripta-141530



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1985-02-20
08:30
Hs 1304.6:1231
https://doi.org/10.7891/e-manuscripta-141530
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
13 5 7 C -9 25
14 9 20 D 2 294
2 14 27