Sunspot drawing of 1971-1-17

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https://doi.org/10.7891/e-manuscripta-96914



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1971-01-17
08:45
Hs 1304.5:4358
https://doi.org/10.7891/e-manuscripta-96914
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
9 2 3 J 18.8 298.2
17 2 1 A 13.2 259.0
19 4 3 B 9.7 323.6
20 63 32 E 17.6 224.3
21 2 2 A 18.0 208.0
22 3 9 D 9.8 190.1
23 2 6 D -11.9 188.1
7 78 56