Sunspot drawing of 1987-9-7

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https://doi.org/10.7891/e-manuscripta-142879



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1987-09-07
07:00
Hs 1304.6:2009
https://doi.org/10.7891/e-manuscripta-142879
Observer : Sergio Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 1 2 A -24 4
92 46 55 D -22 341
95 1 3 J -26 279
3 48 60