Sunspot drawing of 1999-12-20

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https://doi.org/10.7891/e-manuscripta-150465



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1999-12-20
08:30
Hs 1304.6:5799
https://doi.org/10.7891/e-manuscripta-150465
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
403 22 36 D -13 173
405 4 12 D -13 183
408 1 4 H -17 124
409 14 30 E 19 116
410 4 6 C 11 109
411 1 3 J -23 122
6 46 91