Sunspot drawing of 1986-4-30

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https://doi.org/10.7891/e-manuscripta-142066



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1986-04-30
07:15
Hs 1304.6:1575
https://doi.org/10.7891/e-manuscripta-142066
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 8 19 D 3 117
22 8 6 B 7 82
2 16 25