Sunspot drawing of 1974-2-25

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https://doi.org/10.7891/e-manuscripta-97922



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1974-02-25
08:00
Hs 1304.5:5303
https://doi.org/10.7891/e-manuscripta-97922
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
19 7 D -16.8 136.5
20 1 A 13.4 16.5
2 8