Sunspot drawing of 1973-2-6

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https://doi.org/10.7891/e-manuscripta-97413



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1973-02-06
09:00
Hs 1304.5:4976
https://doi.org/10.7891/e-manuscripta-97413
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
34 12 B -8.9 73.2
38 3 J 10.8 15.4
39 7 J 6.4 14.8
40 1 A 21.1 112.1
4 23