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Table 1

Telescopes, instruments and settings used in this work.

Instrument Telescope Resol. Date Stars
and grating
ISIS – 600B ORM-WHT 2500 Oct. 2013 1
WYFFOS – H2400B ORM-WHT 5000 Jul. 2014 7
ISIS – H2400 ORM-WHT 7500 Jul. 2015 2
OSIRIS – R2500U/V ORM-GTC 2500 May 2016 2
IDS – R1200B ORM-INT 5000 Jul. 2016 47
ISIS – R1200B ORM-WHT 5000 Apr. 2017 2

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