Sunspot drawing of 1973-2-28

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https://doi.org/10.7891/e-manuscripta-97470



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1973-02-28
08:00
Hs 1304.5:4996
https://doi.org/10.7891/e-manuscripta-97470
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
58 2 A -13.3 176.4
59 24 E 6.7 141.4
62 4 A 5.3 194.7
3 30