Sunspot drawing of 1961-9-20

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https://doi.org/10.7891/e-manuscripta-92755



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1961-09-20
06:45
Hs 1304.5:1469
https://doi.org/10.7891/e-manuscripta-92755
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
267 11 13 C 14.8 282.1
268 1 3 J -10.4 304.7
272 9 7 C 18.5 205.1
275 7 10 D 3.3 245.7
4 28 33