Sunspot drawing of 1983-4-15

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https://doi.org/10.7891/e-manuscripta-140385



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1983-04-15
07:30
Hs 1304.6:678
https://doi.org/10.7891/e-manuscripta-140385
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
89 4 6 C -17 358
94 14 18 C -8 288
95 3 2 A 20 270
96 3 2 B -15 312
97 7 11 D 7 229
5 31 39