Sunspot drawing of 1988-1-23

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https://doi.org/10.7891/e-manuscripta-143847



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1988-01-23
09:00
Hs 1304.6:2109
https://doi.org/10.7891/e-manuscripta-143847
Observer : Marco Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
10 15 50 E -20 7
11 7 20 C -30 347
2 22 70