Sunspot drawing of 1971-4-9

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https://doi.org/10.7891/e-manuscripta-96749



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1971-04-09
07:30
Hs 1304.5:4425
https://doi.org/10.7891/e-manuscripta-96749
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
111 8 J 14.3 271.8
112 5 B -14.5 262.4
114 16 D 10.8 334.1
115 2 A -4.0 246.2
4 31