Sunspot drawing of 1993-8-31

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https://doi.org/10.7891/e-manuscripta-147514



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1993-08-31
06:45
Hs 1304.6:3869
https://doi.org/10.7891/e-manuscripta-147514
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
225 3 5 C 9 18
227 4 6 C 21 318
228 5 6 B 7 309
3 12 17