Sunspot drawing of 1993-4-17

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https://doi.org/10.7891/e-manuscripta-147688



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1993-04-17
06:30
Hs 1304.6:3746
https://doi.org/10.7891/e-manuscripta-147688
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
109 7 6 B 6 284
110 4 4 B 16 6
111 5 3 B -10 284
112 5 12 C 11 229
4 21 25