Sunspot drawing of 1972-12-13

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https://doi.org/10.7891/e-manuscripta-97013



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1972-12-13
08:30
Hs 1304.5:4936
https://doi.org/10.7891/e-manuscripta-97013
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
378 26 E 10.5 106.9
380 7 B -18.6 97.2
381 24 D -19.5 60.1
382 5 B 20.6 55.6
4 62