Sunspot drawing of 1971-2-17

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https://doi.org/10.7891/e-manuscripta-96800



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1971-02-17
09:00
Hs 1304.5:4380
https://doi.org/10.7891/e-manuscripta-96800
Observer : Araldo Pittini
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
51 13 D 17.3 217.9
53 10 C 13.7 269.6
54 3 J -13.2 202.1
55 7 C -13.7 186.7
56 7 C -16.3 145.5
5 40