Sunspot drawing of 2012-6-20

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https://doi.org/10.7891/e-manuscripta-157247



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2012-06-20
07:15
Hs 1304.6:9615
https://doi.org/10.7891/e-manuscripta-157247
Observer : Marco Cagnotti
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
155 5 13 D -16.1 84.7
162 4 3 B -15.0 18.2
2 9 16