Sunspot drawing of 2013-8-31

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https://doi.org/10.7891/e-manuscripta-157715



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2013-08-31
07:45
Hs 1304.6:9950
https://doi.org/10.7891/e-manuscripta-157715
Observer : Marco Cagnotti
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
252 10 16 D -9.9 10.8
253 15 15 C 12.3 19.0
254 2 6 J 10.6 342.5
257 4 7 B 11.4 332.8
4 31 44