Sunspot drawing of 1987-3-7

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https://doi.org/10.7891/e-manuscripta-143006



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1987-03-07
08:30
Hs 1304.6:1844
https://doi.org/10.7891/e-manuscripta-143006
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
16 25 34 C 6 285
1 25 34