Sunspot drawing of 1973-8-20

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https://doi.org/10.7891/e-manuscripta-97431



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1973-08-20
07:30
Hs 1304.5:5153
https://doi.org/10.7891/e-manuscripta-97431
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
169 2 A 13.2 348.5
1 2