Sunspot drawing of 1973-11-18

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https://doi.org/10.7891/e-manuscripta-97555



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1973-11-18
08:00
Hs 1304.5:5233
https://doi.org/10.7891/e-manuscripta-97555
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
222 7 B 12.8 270.5
223 2 A -11.4 201.9
2 9