Sunspot drawing of 1991-1-20

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https://doi.org/10.7891/e-manuscripta-145817



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1991-01-20
08:30
Hs 1304.6:3058
https://doi.org/10.7891/e-manuscripta-145817
Observer : Andrea Manna
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
11 4 12 H 15 19
13 9 14 C -8 355
17 19 26 D -14 338
18 2 3 A 27 333
19 1 2 A -28 285
20 13 18 D 22 277
23 3 5 B -9 235
7 51 80