Sunspot drawing of 1981-12-20

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https://doi.org/10.7891/e-manuscripta-139374



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1981-12-20
09:45
Hs 1304.6:297
https://doi.org/10.7891/e-manuscripta-139374
Observer : Roberto Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
653 1 3 J 14 205
655 1 3 J -10 247
657 4 12 G -9 185
660 3 7 C 10 124
661 1 4 J 12 115
662 3 9 D -12 200
6 13 38