Sunspot drawing of 1987-5-16

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https://doi.org/10.7891/e-manuscripta-142991



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1987-05-16
08:00
Hs 1304.6:1906
https://doi.org/10.7891/e-manuscripta-142991
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
42 1 3 J -31 112
46 7 13 C -24 349
47 25 44 E 29 343
3 33 60