Sunspot drawing of 1974-7-4

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https://doi.org/10.7891/e-manuscripta-97747



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1974-07-04
07:00
Hs 1304.5:5413
https://doi.org/10.7891/e-manuscripta-97747
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
99 4 B -11.6 175.0
100 78 F -14.8 157.2
101 26 C -9.9 204.4
3 108