Sunspot drawing of 1973-2-22

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https://doi.org/10.7891/e-manuscripta-97428



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1973-02-22
08:00
Hs 1304.5:4990
https://doi.org/10.7891/e-manuscripta-97428
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
46 6 J -17.0 307.8
55 7 B -17.1 259.1
57 2 A -19.0 181.0
3 15