Sunspot drawing of 1981-2-18

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https://doi.org/10.7891/e-manuscripta-139201



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1981-02-18
13:45
Hs 1304.6:47
https://doi.org/10.7891/e-manuscripta-139201
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
79 36 40 D 18 261
80 12 12 H 11 260
81 10 12 G -19 255
84 10 9 C 14 235
85 38 23 D 11 250
86 2 4 C 13 182
87 1 1 A 10 175
7 109 101