Sunspot drawing of 1974-3-31

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https://doi.org/10.7891/e-manuscripta-97878



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1974-03-31
08:00
Hs 1304.5:5328
https://doi.org/10.7891/e-manuscripta-97878
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
36 4 J 7.3 41.3
37 8 A -12.9 287.3
38 2 A -9.5 286.1
39 4 B 12.5 255.6
4 18