Sunspot drawing of 1971-12-16

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https://doi.org/10.7891/e-manuscripta-96880



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1971-12-16
09:00
Hs 1304.5:4653
https://doi.org/10.7891/e-manuscripta-96880
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
345 3 J -2.7 252.0
348 5 J 8.6 240.1
353 24 D 17.3 194.1
354 4 J -13.9 189.2
360 13 C 11.3 183.2
361 3 B -14.5 210.1
362 11 C 8.7 138.6
363 3 J -4.8 133.9
8 66