Sunspot drawing of 1983-2-17

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https://doi.org/10.7891/e-manuscripta-140264



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1983-02-17
09:30
Hs 1304.6:635
https://doi.org/10.7891/e-manuscripta-140264
Observer : Michele De Lorenzi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
43 6 12 B -17 299
44 1 3 J -13 265
2 7 15