Table 1: Chemical composition of ZNG 4 in M 13.

Element

 No. of lines $T_{\rm eff} = 8500$ K, log g= 2.5 $T_{\rm eff} = 8500$ K, log g= 2.5 $T_{\rm eff} = 8750$ K, log g= 2.0
    $V_{\rm t} = 2$ km  $\rm s^{-1}$ and $V_{\rm t} = 2$ km  $\rm s^{-1}$ and $V_{\rm t} = 2$ km  $\rm s^{-1}$ and
    $\rm [Fe/H]= -1.5$ $\rm [Fe/H]= -1.5$ $\rm [Fe/H]= -1.5$
    MOOG WIDTH MOOG
    $ \rm [X/H] \pm \sigma $ [Ele/Fe] $ \rm [X/H] \pm \sigma $ [ Ele/Fe] $ \rm [X/H] \pm \sigma $

He I

 1 -0.55 $\pm$ 0.20   -0.68 $\pm$ 0.20   -1.13 $\pm$ 0.31
Na I 2 -1.28 $\pm$ 0.10 +0.21 -1.30 $\pm$ 0.10 +0.20 -0.79 $\pm$ 0.11
Mg I 3 -1.46 $\pm$ 0.07 +0.03 -1.48 $\pm$ 0.05 +0.02 -1.03 $\pm$ 0.16
Mg II 2 -1.56 $\pm$ 0.14 -0.07 -1.59 $\pm$ 0.09 -0.09 -1.83 $\pm$ 0.15
Si II 4 -1.10 $\pm$ 0.15 +0.39 -1.20 $\pm$ 0.12 +0.30 -1.31 $\pm$ 0.24
Ca I 2 -0.80 $\pm$ 0.35 +0.69 -0.93 $\pm$ 0.25 +0.57 -0.09 $\pm$ 0.33
Ca II 1 -0.49 $\pm$ 0.10 +1.00 -0.62 $\pm$ 0.10 +0.88 -0.32 $\pm$ 0.10
Sc II 7 -0.99 $\pm$ 0.25 +0.50 -1.04 $\pm$ 0.25 +0.45 -0.73 $\pm$ 0.25
Ti II 51 -0.75 $\pm$ 0.18 +0.74 -0.83 $\pm$ 0.25 +0.67 -0.59 $\pm$ 0.19
Cr II 8 -1.41 $\pm$ 0.12 +0.08 -1.47 $\pm$ 0.12 +0.03 -1.38 $\pm$ 0.12
Fe I 13 -1.48 $\pm$ 0.15 +0.02 -1.53 $\pm$ 0.26 +0.02 -0.99 $\pm$ 0.14
Fe II 28 -1.50 $\pm$ 0.21 +0.00 -1.46 $\pm$ 0.22 +0.02 -1.52 $\pm$ 0.22
Sr II 1 -2.19 $\pm$ 0.10 -0.70 -2.21 $\pm$ 0.10 -0.71 -1.65 $\pm$ 0.12
Y II 2 -1.20 $\pm$ 0.17 +0.29 -1.30 $\pm$ 0.12 +0.37 -0.64 $\pm$ 0.14
Ba II 2 -1.21 $\pm$ 0.05 +0.28 -1.23 $\pm$ 0.04 +0.26 -0.61 $\pm$ 0.10


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