Sunspot drawing of 1974-9-12

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https://doi.org/10.7891/e-manuscripta-97725



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1974-09-12
08:00
Hs 1304.5:5480
https://doi.org/10.7891/e-manuscripta-97725
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
142 3 J -7.8 20.4
143 6 J -3.9 346.0
144 15 D 7.2 18.2
146 1 A -13.1 5.7
149 36 D 8.1 266.4
150 14 C -11.7 265.5
151 3 J -15.4 255.2
7 78