Sunspot drawing of 1986-4-19

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https://doi.org/10.7891/e-manuscripta-142283



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1986-04-19
07:45
Hs 1304.6:1570
https://doi.org/10.7891/e-manuscripta-142283
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 1 1 A -10 173
19 2 6 J 1 172
20 1 1 A -4 162
3 4 8