Sunspot drawing of 1975-6-30

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https://doi.org/10.7891/e-manuscripta-98187



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1975-06-30
07:00
Hs 1304.5:5719
https://doi.org/10.7891/e-manuscripta-98187
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
52 13 C 6.3 60.7
54 4 B 2.6 60.4
2 17