Sunspot drawing of 1981-7-21

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https://doi.org/10.7891/e-manuscripta-139090



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1981-07-21
06:15
Hs 1304.6:174
https://doi.org/10.7891/e-manuscripta-139090
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
327 1 3 J -27 100
337 2 1 A -10 50
341 4 9 C -9 96
342 41 37 D 16 9
344 3 6 J 4 76
346 4 6 J 10 9
348 2 2 B 3 64
349 18 24 D -7 340
350 1 2 A -8 330
351 1 1 A -19 340
352 1 1 A -20 322
353 2 6 D -9 294
12 80 98