Sunspot drawing of 1983-12-23

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https://doi.org/10.7891/e-manuscripta-140516



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1983-12-23
13:30
Hs 1304.6:890
https://doi.org/10.7891/e-manuscripta-140516
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
320 7 10 C -11 268
322 1 3 J 23 283
2 8 13