Sunspot drawing of 1986-7-20

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https://doi.org/10.7891/e-manuscripta-142022



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1986-07-20
08:15
Hs 1304.6:1650
https://doi.org/10.7891/e-manuscripta-142022
Observer : Marco Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
41 5 6 B 7 38
43 3 3 B 6 30
44 5 5 A 8 349
3 13 14