Sunspot drawing of 1971-8-17

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https://doi.org/10.7891/e-manuscripta-96728



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1971-08-17
07:45
Hs 1304.5:4544
https://doi.org/10.7891/e-manuscripta-96728
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
247 2 A 13.4 354.1
251 4 A 14.0 343.4
252 6 J 12.5 317.3
253 9 B -15.1 15.3
254 4 J 16.7 293.4
255 3 J -12.8 269.8
6 28