Sunspot drawing of 1961-5-28

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https://doi.org/10.7891/e-manuscripta-92575



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1961-05-28
07:00
Hs 1304.5:1359
https://doi.org/10.7891/e-manuscripta-92575
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
142 4 B 17.5 344.6
144 11 C 2.2 328.6
146 13 D 4.8 329.2
149 4 B -10.2 325.8
4 32