Sunspot drawing of 1974-10-15

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https://doi.org/10.7891/e-manuscripta-97963



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1974-10-15
08:30
Hs 1304.5:5509
https://doi.org/10.7891/e-manuscripta-97963
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
164 16 D 11.1 284.9
165 44 D 8.5 272.9
2 60