Sunspot drawing of 1974-6-20

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https://doi.org/10.7891/e-manuscripta-97738



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1974-06-20
05:45
Hs 1304.5:5402
https://doi.org/10.7891/e-manuscripta-97738
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 19 C -15.1 349.5
95 1 A 8.2 285.5
2 20