Sunspot drawing of 1974-3-7

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https://doi.org/10.7891/e-manuscripta-97718



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1974-03-07
08:00
Hs 1304.5:5308
https://doi.org/10.7891/e-manuscripta-97718
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
25 9 B 10.8 251.9
26 3 A 3.9 224.7
2 12