Sunspot drawing of 1987-1-23

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https://doi.org/10.7891/e-manuscripta-142767



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1987-01-23
08:30
Hs 1304.6:1813
https://doi.org/10.7891/e-manuscripta-142767
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
4 11 19 B -25 125
7 2 3 A 2 129
2 13 22