Sunspot drawing of 1999-8-20

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https://doi.org/10.7891/e-manuscripta-150490



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1999-08-20
15:15
Hs 1304.6:5710
https://doi.org/10.7891/e-manuscripta-150490
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
253 8 16 H 21 335
256 7 7 B 16 355
257 8 15 E -20 252
258 3 8 H -24 255
4 26 46