Sunspot drawing of 1971-12-20

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https://doi.org/10.7891/e-manuscripta-96704



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1971-12-20
10:00
Hs 1304.5:4657
https://doi.org/10.7891/e-manuscripta-96704
Observer : Araldo Pittini
Seeing (SIDC) : 1
Group Not Weighted Weighted Type Latitude Carrington Longit.
353 2 A 17.0 195.5
360 9 D 11.7 181.3
362 2 A 7.6 143.0
363 3 J -4.8 134.1
364 20 E -14.3 111.7
367 2 A -5.5 106.4
368 2 A -9.4 175.3
369 10 H -15.6 95.9
370 3 B -10.5 86.3
9 53