Sunspot drawing of 1971-4-13

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https://doi.org/10.7891/e-manuscripta-96933



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1971-04-13
07:00
Hs 1304.5:4429
https://doi.org/10.7891/e-manuscripta-96933
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
111 5 J 15.8 269.3
112 3 A -16.0 260.8
117 11 D 2.2 179.7
118 6 H -6.3 174.6
119 5 C 19.6 155.3
120 10 C 9.2 155.9
121 11 C -18.9 148.3
122 20 D -5.0 206.3
8 71