Sunspot drawing of 1971-3-10

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https://doi.org/10.7891/e-manuscripta-96940



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1971-03-10
08:00
Hs 1304.5:4401
https://doi.org/10.7891/e-manuscripta-96940
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
79 6 11 D -16.3 262.8
80 15 15 B -8.5 295.1
81 1 3 J 18.8 239.9
3 22 29