Sunspot drawing of 1974-4-8

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https://doi.org/10.7891/e-manuscripta-97892



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1974-04-08
07:30
Hs 1304.5:5336
https://doi.org/10.7891/e-manuscripta-97892
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
39 19 B 11.8 258.7
40 27 B -12.4 183.0
41 7 B -4.5 213.2
3 53