Sunspot drawing of 1972-12-24

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https://doi.org/10.7891/e-manuscripta-97088



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1972-12-24
09:00
Hs 1304.5:4946
https://doi.org/10.7891/e-manuscripta-97088
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
387 12 D 15.6 341.2
389 28 E 10.3 309.9
391 1 B -13.3 324.3
3 41