Sunspot drawing of 1971-10-17

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https://doi.org/10.7891/e-manuscripta-96710



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1971-10-17
13:15
Hs 1304.5:4602
https://doi.org/10.7891/e-manuscripta-96710
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
291 20 C 8.1 210.3
292 6 B 7.6 273.3
2 26