Sunspot drawing of 1971-12-15

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https://doi.org/10.7891/e-manuscripta-96712



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1971-12-15
08:30
Hs 1304.5:4652
https://doi.org/10.7891/e-manuscripta-96712
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
345 4 J -3.3 251.3
348 19 C 8.1 241.4
353 24 D 17.9 193.9
354 5 J -13.9 188.5
360 6 C 11.7 182.2
361 2 B -13.8 209.2
362 7 B 8.7 137.4
363 3 C -4.3 132.1
8 70