Sunspot drawing of 1981-8-18

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https://doi.org/10.7891/e-manuscripta-139198



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1981-08-18
08:15
Hs 1304.6:199
https://doi.org/10.7891/e-manuscripta-139198
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
383 1 1 A -8 57
389 8 3 B -19 19
391 56 54 E -15 7
398 19 20 C -7 342
400 3 4 J -2 326
401 13 17 G -16 322
404 5 9 G -6 329
404A 4 9 B -7 320
405 7 6 B 10 43
406 1 1 A 16 304
407 9 18 D -8 292
408 4 8 C -11 284
12 130 150