Sunspot drawing of 2016-7-20

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https://doi.org/10.7891/e-manuscripta-159057



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2016-07-20
07:30
Hs 1304.6:10704
https://doi.org/10.7891/e-manuscripta-159057
Observer : Marco Cagnotti
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
136 1 15 C 3.3 174.0
138 19 23 D 5.1 165.8
141 2 4 C 14.2 128.3
3 22 42