Sunspot drawing of 1971-9-23

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https://doi.org/10.7891/e-manuscripta-96694



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1971-09-23
07:30
Hs 1304.5:4580
https://doi.org/10.7891/e-manuscripta-96694
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
269 10 C 12.0 296.3
270 5 J 4.6 281.3
271 1 A -10.3 281.9
274 3 A -5.2 230.7
277 1 A 16.0 186.5
278 8 C -14.6 189.3
279 1 A -5.1 299.5
7 29