Sunspot drawing of 1973-4-12

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https://doi.org/10.7891/e-manuscripta-97561



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1973-04-12
07:00
Hs 1304.5:5037
https://doi.org/10.7891/e-manuscripta-97561
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
86 7 B -8.9 358.7
88 36 D -8.3 325.2
90 2 A 11.7 7.2
3 45