Sunspot drawing of 1974-5-16

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https://doi.org/10.7891/e-manuscripta-97776



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1974-05-16
07:00
Hs 1304.5:5369
https://doi.org/10.7891/e-manuscripta-97776
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
69 1 A -11.9 123.6
70 6 C 5.2 113.6
2 7