Sunspot drawing of 1971-4-18

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https://doi.org/10.7891/e-manuscripta-96856



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1971-04-18
06:30
Hs 1304.5:4433
https://doi.org/10.7891/e-manuscripta-96856
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
117 7 C 2.2 180.7
118 11 H -5.8 173.7
119 39 E 18.8 151.1
120 12 C 8.3 157.5
121 6 B -17.4 150.3
122 4 C -4.1 208.4
123 4 B -4.9 217.4
126 4 D -11.2 76.6
8 87