Sunspot drawing of 2012-4-12

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https://doi.org/10.7891/e-manuscripta-156995



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2012-04-12
08:00
Hs 1304.6:9566
https://doi.org/10.7891/e-manuscripta-156995
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
88 2 3 A -19.8 219.3
89 12 14 D 6.1 206.6
90 1 2 A -40.2 204.7
91 2 3 A -13.1 160.2
4 17 22