Sunspot drawing of 1987-3-26

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https://doi.org/10.7891/e-manuscripta-142907



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1987-03-26
09:00
Hs 1304.6:1863
https://doi.org/10.7891/e-manuscripta-142907
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
20 2 2 B 23 78
22 1 3 J 5 293
2 3 5