Sunspot drawing of 1971-10-20

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https://doi.org/10.7891/e-manuscripta-96890



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1971-10-20
08:15
Hs 1304.5:4605
https://doi.org/10.7891/e-manuscripta-96890
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
291 48 E 8.3 210.8
292 2 A 6.2 275.1
293 5 B 18.4 187.5
294 1 A -13.7 222.7
295 3 B -11.6 204.1
5 59