Sunspot drawing of 1981-6-21

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https://doi.org/10.7891/e-manuscripta-139120



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1981-06-21
08:00
Hs 1304.6:147
https://doi.org/10.7891/e-manuscripta-139120
Observer : Roberto Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
282 5 9 J -25 107
283 20 32 D -20 93
287 1 2 A -26 50
290 28 28 D 14 357
291 2 3 B -12 12
292 1 2 A -16 353
293 1 3 J -9 340
7 58 79