Sunspot drawing of 1983-4-9

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https://doi.org/10.7891/e-manuscripta-140355



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1983-04-09
11:15
Hs 1304.6:673
https://doi.org/10.7891/e-manuscripta-140355
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
86 30 33 C -10 39
89 22 23 C -16 358
91 5 5 J -8 342
92 3 2 A -12 31
4 60 63