Sunspot drawing of 1973-9-11

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https://doi.org/10.7891/e-manuscripta-97356



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1973-09-11
07:45
Hs 1304.5:5175
https://doi.org/10.7891/e-manuscripta-97356
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
179 4 H 13.0 165.2
183 23 B -11.9 134.4
185 13 B -10.7 151.4
3 40