Sunspot drawing of 1977-4-15

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https://doi.org/10.7891/e-manuscripta-98787



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1977-04-15
06:30
Hs 1304.5:6266
https://doi.org/10.7891/e-manuscripta-98787
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
32 18 D -20.6 26.6
1 18