Sunspot drawing of 1970-12-21

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https://doi.org/10.7891/e-manuscripta-96438



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1970-12-21
09:30
Hs 1304.5:4335
https://doi.org/10.7891/e-manuscripta-96438
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
522 6 C 17.9 289.3
524 20 D 13.0 283.0
528 2 A -10.8 305.4
529 3 A -9.3 265.7
530 14 C -10.7 225.5
531 1 A 18.2 234.1
533 28 C 23.8 294.0
535 6 C 18.3 215.0
536 1 A 10.9 260.0
9 81