Sunspot drawing of 1987-9-6

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https://doi.org/10.7891/e-manuscripta-142848



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1987-09-06
08:00
Hs 1304.6:2008
https://doi.org/10.7891/e-manuscripta-142848
Observer : Marco Cortesi
Seeing (SIDC) : 3
Group Not Weighted Weighted Type Latitude Carrington Longit.
91 1 2 A -24 5
92 29 46 D -22 342
2 30 48