Sunspot drawing of 1986-4-13

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https://doi.org/10.7891/e-manuscripta-142140



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1986-04-13
08:30
Hs 1304.6:1567
https://doi.org/10.7891/e-manuscripta-142140
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
17 7 7 B -13 248
1 7 7