Sunspot drawing of 1981-5-18

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https://doi.org/10.7891/e-manuscripta-139066



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1981-05-18
07:45
Hs 1304.6:117
https://doi.org/10.7891/e-manuscripta-139066
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
237 7 9 C 12 208
238 1 3 J -6 199
240 51 44 E 13 156
241 27 26 D 15 145
245 7 16 H -25 119
247 14 14 C -26 162
6 107 112