Sunspot drawing of 1983-9-21

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https://doi.org/10.7891/e-manuscripta-140527



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1983-09-21
07:00
Hs 1304.6:811
https://doi.org/10.7891/e-manuscripta-140527
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
252 3 6 C -12 62
258 2 6 J -8 335
259 4 4 B 16 39
260 2 1 A -15 300
4 11 17