Sunspot drawing of 1969-4-23

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https://doi.org/10.7891/e-manuscripta-95855



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1969-04-23
08:00
Hs 1304.5:3816
https://doi.org/10.7891/e-manuscripta-95855
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
143 3 J -15.5 60.7
146 25 H 21.2 58.5
148 3 J -15.5 89.8
155 27 C -11.3 42.7
156 3 A 18.9 46.2
157 11 B 7.2 330.9
6 72