Sunspot drawing of 1973-8-23

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https://doi.org/10.7891/e-manuscripta-97336



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1973-08-23
09:15
Hs 1304.5:5156
https://doi.org/10.7891/e-manuscripta-97336
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
169 5 B 12.6 343.7
170 3 J 13.7 258.9
2 8