Sunspot drawing of 1974-2-19

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https://doi.org/10.7891/e-manuscripta-97925



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1974-02-19
14:15
Hs 1304.5:5297
https://doi.org/10.7891/e-manuscripta-97925
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
15 6 J -16.8 203.3
16 7 J -18.4 139.1
18 30 E -18.5 150.9
3 43