Sunspot drawing of 1972-12-17

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https://doi.org/10.7891/e-manuscripta-97073



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1972-12-17
09:00
Hs 1304.5:4940
https://doi.org/10.7891/e-manuscripta-97073
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
378 6 D 10.4 107.4
380 1 A -17.9 100.9
381 30 E -19.8 58.9
383 3 B -12.7 55.3
384 3 A -7.5 14.3
385 4 B -8.0 351.9
386 1 A 16.0 9.3
387 5 B 14.8 340.4
8 53