Sunspot drawing of 1974-6-17

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https://doi.org/10.7891/e-manuscripta-97832



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1974-06-17
06:30
Hs 1304.5:5399
https://doi.org/10.7891/e-manuscripta-97832
Observer : Araldo Pittini
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 3 J 5.4 65.2
91 12 H -14.0 351.5
2 15