Sunspot drawing of 2013-9-18

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https://doi.org/10.7891/e-manuscripta-157731



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2013-09-18
07:45
Hs 1304.6:9965
https://doi.org/10.7891/e-manuscripta-157731
Observer : Sergio Cortesi
Seeing (SIDC) : 2
Group Not Weighted Weighted Type Latitude Carrington Longit.
265 1 3 J -3.5 143.9
270 5 9 C 1.1 127.5
271 1 2 A -18.2 73.2
272 1 2 A 10.6 65.2
273 1 4 H -17.7 59.8
5 9 20