Sunspot drawing of 1974-6-30

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https://doi.org/10.7891/e-manuscripta-97891



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1974-06-30
06:30
Hs 1304.5:5409
https://doi.org/10.7891/e-manuscripta-97891
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
99 4 J -11.0 177.4
100 E -15.0 158.0
101 11 B -9.9 201.9
3 15