Sunspot drawing of 1974-1-8

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https://doi.org/10.7891/e-manuscripta-97823



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1974-01-08
09:00
Hs 1304.5:5272
https://doi.org/10.7891/e-manuscripta-97823
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
2 13 C 6.3 309.9
3 3 J -10.8 245.6
2 16