Sunspot drawing of 1974-4-6

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https://doi.org/10.7891/e-manuscripta-97699



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1974-04-06
07:00
Hs 1304.5:5334
https://doi.org/10.7891/e-manuscripta-97699
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 29 B 11.3 259.2
40 1 A -10.8 185.5
2 30