Sunspot drawing of 1991-5-31

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https://doi.org/10.7891/e-manuscripta-145721



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1991-05-31
08:00
Hs 1304.6:3169
https://doi.org/10.7891/e-manuscripta-145721
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
252 39 32 E 22 49
258 1 3 J -14 20
260 6 7 B -25 64
261 28 28 C -10 357
264 30 30 D 6 348
265 17 11 B 13 52
268 7 7 B -5 347
269 6 5 B -14 13
270 3 2 B -17 359
271 2 3 B -10 317
272 1 4 H 19 285
11 140 132