Sunspot drawing of 1983-2-15

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https://doi.org/10.7891/e-manuscripta-140344



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1983-02-15
09:00
Hs 1304.6:633
https://doi.org/10.7891/e-manuscripta-140344
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
41 4 3 A 3 6
42 1 2 A 15 37
43 1 1 A -18 303
3 6 6