Sunspot drawing of 1993-5-20

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https://doi.org/10.7891/e-manuscripta-147635



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1993-05-20
12:00
Hs 1304.6:3773
https://doi.org/10.7891/e-manuscripta-147635
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
140 3 5 C 10 277
147 1 2 A -17 154
2 4 7