Sunspot drawing of 1987-9-10

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https://doi.org/10.7891/e-manuscripta-142880



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1987-09-10
09:00
Hs 1304.6:2012
https://doi.org/10.7891/e-manuscripta-142880
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
92 33 40 D -22 340
95 8 9 B -27 277
96 4 3 B 27 250
97 2 6 J -32 233
4 47 58