Sunspot drawing of 1975-3-17

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https://doi.org/10.7891/e-manuscripta-98069



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1975-03-17
08:00
Hs 1304.5:5630
https://doi.org/10.7891/e-manuscripta-98069
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
29 6 C -11.0 86.9
30 24 D -14.5 52.0
2 30