Sunspot drawing of 1975-2-15

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https://doi.org/10.7891/e-manuscripta-98120



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1975-02-15
08:30
Hs 1304.5:5607
https://doi.org/10.7891/e-manuscripta-98120
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
21 3 J 3.2 131.7
1 3