Sunspot drawing of 1999-8-17

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https://doi.org/10.7891/e-manuscripta-150446



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1999-08-17
07:30
Hs 1304.6:5707
https://doi.org/10.7891/e-manuscripta-150446
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
248 1 3 J -15 91
253 10 16 H 21 336
254 2 2 B -20 3
255 3 4 B -9 44
4 16 25