Sunspot drawing of 1970-12-17

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https://doi.org/10.7891/e-manuscripta-96454



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1970-12-17
08:30
Hs 1304.5:4331
https://doi.org/10.7891/e-manuscripta-96454
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
512 5 4 J 13.9 36.0
515 7 5 B 13.1 6.0
522 9 10 C 18.4 290.6
524 28 14 H 12.6 279.9
525 4 3 A -12.6 13.8
527 1 1 A 13.7 251.8
6 54 37