Sunspot drawing of 1974-4-19

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https://doi.org/10.7891/e-manuscripta-97883



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1974-04-19
07:30
Hs 1304.5:5347
https://doi.org/10.7891/e-manuscripta-97883
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
44 2 A -8.4 56.8
47 17 D -13.2 124.2
48 13 C -9.6 118.8
50 3 B 2.7 102.3
4 35