Sunspot drawing of 1981-9-18

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https://doi.org/10.7891/e-manuscripta-139407



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1981-09-18
09:00
Hs 1304.6:227
https://doi.org/10.7891/e-manuscripta-139407
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
454 7 10 C 19 338
457 2 3 A -16 1
458 16 28 D 16 342
460 7 11 C -4 312
464 1 3 J 10 292
465 3 5 C -8 289
468 16 25 E 10 262
470 2 3 A 14 307
471 6 15 D -7 253
472 6 10 B 20 324
10 66 113