Sunspot drawing of 2011-5-18

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https://doi.org/10.7891/e-manuscripta-156716



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2011-05-18
09:00
Hs 1304.6:9307
https://doi.org/10.7891/e-manuscripta-156716
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
86 1 1 A 10.3 328.1
97 10 13 D -23.6 277.1
99 1 3 J -15.7 194.6
100 1 2 A -15.4 166.1
4 13 19