Sunspot drawing of 1974-3-11

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https://doi.org/10.7891/e-manuscripta-97775



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1974-03-11
13:30
Hs 1304.5:5312
https://doi.org/10.7891/e-manuscripta-97775
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
26 2 A 3.9 224.2
27 19 D 0.4 241.9
28 6 A -16.8 155.8
3 27