Sunspot drawing of 1978-1-17

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https://doi.org/10.7891/e-manuscripta-99061



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1978-01-17
15:15
Hs 1304.5:6497
https://doi.org/10.7891/e-manuscripta-99061
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
8 7 C 17.5 71.5
11 5 B -26.6 1.3
2 12