Sunspot drawing of 1963-2-18

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https://doi.org/10.7891/e-manuscripta-93624



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1963-02-18
14:00
Hs 1304.5:1906
https://doi.org/10.7891/e-manuscripta-93624
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
23 6 C 9.8 210.0
1 6