Sunspot drawing of 1975-7-18

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https://doi.org/10.7891/e-manuscripta-98147



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1975-07-18
07:45
Hs 1304.5:5736
https://doi.org/10.7891/e-manuscripta-98147
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
59 J -10.8 214.9
61 23 D -6.2 166.8
62 8 C -10.1 163.6
3 31