Sunspot drawing of 1973-4-15

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https://doi.org/10.7891/e-manuscripta-97552



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1973-04-15
07:15
Hs 1304.5:5040
https://doi.org/10.7891/e-manuscripta-97552
Observer : Araldo Pittini
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 25 D -8.4 325.6
92 2 B -11.9 325.8
93 2 A -0.5 241.6
3 29