Sunspot drawing of 1981-5-20

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https://doi.org/10.7891/e-manuscripta-139039



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1981-05-20
08:00
Hs 1304.6:119
https://doi.org/10.7891/e-manuscripta-139039
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
240 21 23 E 14 157
241 13 16 C 15 144
245 20 23 H -25 118
247 6 11 J -27 164
248 5 3 A 8 159
249 1 3 J -8 36
6 66 79