Sunspot drawing of 1961-5-18

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https://doi.org/10.7891/e-manuscripta-92591



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1961-05-18
15:45
Hs 1304.5:1350
https://doi.org/10.7891/e-manuscripta-92591
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
132 5 J 8.6 65.5
136 7 B -11.2 66.4
138 9 B 3.9 86.2
3 21