Sunspot drawing of 1983-2-11

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https://doi.org/10.7891/e-manuscripta-140357



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1983-02-11
09:00
Hs 1304.6:630
https://doi.org/10.7891/e-manuscripta-140357
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
37 6 14 D -18 124
41 1 2 A 3 7
2 7 16