Sunspot drawing of 1987-3-16

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https://doi.org/10.7891/e-manuscripta-143041



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1987-03-16
09:15
Hs 1304.6:1853
https://doi.org/10.7891/e-manuscripta-143041
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
17 1 3 J -32 78
1 1 3