Sunspot drawing of 1973-1-20

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https://doi.org/10.7891/e-manuscripta-97305



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1973-01-20
09:45
Hs 1304.5:4962
https://doi.org/10.7891/e-manuscripta-97305
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
15 8 C 10.3 314.8
17 14 B -13.7 324.8
18 6 B -18.1 8.9
19 3 B 9.9 243.7
20 1 A 11.5 4.2
21 1 A -20.8 304.0
22 2 A 17.1 283.1
7 35