Sunspot drawing of 1974-2-23

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https://doi.org/10.7891/e-manuscripta-97882



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1974-02-23
11:15
Hs 1304.5:5301
https://doi.org/10.7891/e-manuscripta-97882
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
18 8 G -18.9 149.3
19 17 D -16.4 135.9
20 2 A 12.5 18.4
3 27