Sunspot drawing of 1975-2-3

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https://doi.org/10.7891/e-manuscripta-98114



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1975-02-03
09:00
Hs 1304.5:5599
https://doi.org/10.7891/e-manuscripta-98114
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 13 D -13.1 156.4
19 9 B -10.2 147.5
20 2 A -12.0 141.4
3 24