Sunspot drawing of 1975-2-4

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https://doi.org/10.7891/e-manuscripta-98011



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1975-02-04
10:45
Hs 1304.5:5600
https://doi.org/10.7891/e-manuscripta-98011
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 14 C -13.2 157.8
19 2 A -9.8 150.0
21 3 B 0.9 121.1
3 19