Sunspot drawing of 1987-9-1

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https://doi.org/10.7891/e-manuscripta-142769



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1987-09-01
07:00
Hs 1304.6:2003
https://doi.org/10.7891/e-manuscripta-142769
Observer : Sergio Cortesi
Seeing (SIDC) : 4
Group Not Weighted Weighted Type Latitude Carrington Longit.
90 5 5 A -23 47
91 1 2 A -25 3
92 1 4 H -22 348
3 7 11