Sunspot drawing of 1987-4-29

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https://doi.org/10.7891/e-manuscripta-142827



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1987-04-29
07:30
Hs 1304.6:1892
https://doi.org/10.7891/e-manuscripta-142827
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 4 5 J 3 298
40 7 6 B -30 280
2 11 11