Sunspot drawing of 1973-1-18

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https://doi.org/10.7891/e-manuscripta-97490



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1973-01-18
14:45
Hs 1304.5:4960
https://doi.org/10.7891/e-manuscripta-97490
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
15 11 J 9.4 317.0
16 4 A 2.8 320.8
17 7 B -12.8 325.1
18 5 B -17.5 8.1
4 27