Sunspot drawing of 1974-9-7

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https://doi.org/10.7891/e-manuscripta-97696



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1974-09-07
07:30
Hs 1304.5:5475
https://doi.org/10.7891/e-manuscripta-97696
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
142 3 J -6.9 20.4
143 3 J -3.0 346.4
144 2 A 7.8 15.4
146 3 B -11.8 5.1
147 2 A -13.7 339.1
5 13