Sunspot drawing of 1972-4-1

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https://doi.org/10.7891/e-manuscripta-97025



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1972-04-01
07:45
Hs 1304.5:4715
https://doi.org/10.7891/e-manuscripta-97025
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
2 2 A -14.9 269.3
105 7 B -9.7 200.5
106 4 C -8.3 194.0
109 1 A -25.6 249.7
110 2 A 0.2 209.1
5 16