Sunspot drawing of 1981-8-20

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https://doi.org/10.7891/e-manuscripta-139393



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1981-08-20
08:00
Hs 1304.6:201
https://doi.org/10.7891/e-manuscripta-139393
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
391 50 51 E -15 6
398 17 20 C -7 342
400 4 5 J -2 326
401 15 20 G -16 324
404 7 9 G -5 330
404A 5 7 C -7 320
405 8 11 C 10 46
406 14 12 C 11 308
407 11 18 D -8 295
408 21 21 C -12 283
409 2 1 A -13 293
410 2 3 A -7 269
12 156 178