Sunspot drawing of 1986-10-4

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https://doi.org/10.7891/e-manuscripta-142023



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1986-10-04
09:00
Hs 1304.6:1717
https://doi.org/10.7891/e-manuscripta-142023
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
53 7 10 J 8 109
54 7 8 B 34 96
2 14 18