Sunspot drawing of 1987-1-3

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https://doi.org/10.7891/e-manuscripta-142801



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1987-01-03
09:45
Hs 1304.6:1796
https://doi.org/10.7891/e-manuscripta-142801
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
1 7 9 C 6 12
1 7 9