Sunspot drawing of 1964-5-21

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https://doi.org/10.7891/e-manuscripta-93877



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1964-05-21
06:00
Hs 1304.5:2281
https://doi.org/10.7891/e-manuscripta-93877
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
44 3 A 6.1 353.7
1 3