Sunspot drawing of 1983-4-7

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https://doi.org/10.7891/e-manuscripta-140266



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1983-04-07
07:30
Hs 1304.6:672
https://doi.org/10.7891/e-manuscripta-140266
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
78 1 3 J -15 126
86 21 31 D -11 38
89 5 11 D -16 359
90 1 2 A -7 76
91 3 5 C -9 338
5 31 52