Sunspot drawing of 1971-10-16

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https://doi.org/10.7891/e-manuscripta-96696



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1971-10-16
08:00
Hs 1304.5:4601
https://doi.org/10.7891/e-manuscripta-96696
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
289 1 A 11.8 297.5
290 5 B -12.6 329.8
291 6 C 7.6 209.2
3 12