Sunspot drawing of 1988-2-10

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https://doi.org/10.7891/e-manuscripta-143590



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1988-02-10
09:00
Hs 1304.6:2120
https://doi.org/10.7891/e-manuscripta-143590
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 2 6 C 20 154
26 3 6 B 28 130
30 3 8 C -35 21
31 2 2 A -23 78
4 10 22