Table 1: Atmospheric parameters of PG 1325+101 derived from spectroscopy.
Source $T_{{\rm eff}}$ (K) $\log g$ $\log N($He)/N(H)
Telting & Østensen (2004) 34 800 $\pm$ 390 $5.81 \pm 0.05$ $-1.65 \pm 0.02$
This work (PB6) 34 890 $\pm$ 525 $5.84 \pm 0.09$ $-1.74 \pm 0.07$
This work (BG9) 35 090 $\pm$ 450 $5.81 \pm 0.08$ $-1.71 \pm 0.05$
This work (MMT1) 35 420 $\pm$ 390 $5.78 \pm 0.05$ $-1.68 \pm 0.02$
Mean$^{\dag }$ 35 050 $\pm$ 220$^{\ddag }$ $5.81 \pm 0.04$$^{\ddag }$ $-1.70 \pm 0.02$$^{\ddag }$
$^{\dag }$ Reference values used for the asteroseismic analysis.
$^{\ddag }$ The given error is the quadratic combination of the uncertainties of each measurement.

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