Sunspot drawing of 1975-4-30

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https://doi.org/10.7891/e-manuscripta-98034



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1975-04-30
07:30
Hs 1304.5:5666
https://doi.org/10.7891/e-manuscripta-98034
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 1 A -1.1 122.1
40 1 A 8.4 232.2
41 2 A -12.2 88.9
3 4