Sunspot drawing of 1971-8-18

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https://doi.org/10.7891/e-manuscripta-96681



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1971-08-18
08:45
Hs 1304.5:4545
https://doi.org/10.7891/e-manuscripta-96681
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
247 2 A 13.2 354.2
251 4 A 13.9 344.4
252 6 J 12.1 317.8
253 7 B -15.0 16.0
254 4 A 16.6 293.9
255 26 E -13.1 268.3
6 49