Sunspot drawing of 1999-1-31

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https://doi.org/10.7891/e-manuscripta-150417



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1999-01-31
10:45
Hs 1304.6:5532
https://doi.org/10.7891/e-manuscripta-150417
Observer : Andrea Manna
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
27 3 9 D 18 170
28 4 6 B 28 137
29 2 3 B 22 127
3 9 18