Table 16: Observed and model line ratios; $4.0 \leq z < 4.5$.
Parameter Obs. Err.a Modelsb
$-25.5 > M_B \geq -26.5$
$Z/Z_\odot $     5.0 5.0
$\beta $     -1.00 -1.06
$\Gamma $     -1.00 -1.24
N V/C IV 0.724 0.036 0.499 0.614
(O I+Si II)/C IV 0.148 0.010 0.163 0.119
C II/C IV 0.067 0.010 0.199 0.188
(Si IV+O IV])/C IV 0.349 0.017 0.322 0.352
N IV]/C IV 0.019 0.010 0.152 0.155
He II/C IV 0.132 0.010 0.186 0.185
(O III]+Al II)/C IV 0.049 0.010 0.289 0.288
$-26.5 > M_B \geq -27.5$
$Z/Z_\odot $     10.0 5.0
$\beta $     -1.00 -1.03
$\Gamma $     -1.00 -1.40
N V/C IV 0.933 0.047 0.837 0.709
(O I+Si II)/C IV 0.146 0.010 0.250 0.103
C II/C IV 0.068 0.010 0.317 0.194
(Si IV+O IV])/C IV 0.383 0.019 0.426 0.404
N IV]/C IV 0.010 0.010 0.298 0.139
He II/C IV 0.095 0.010 0.178 0.198
(O III]+Al II)/C IV 0.064 0.010 0.373 0.269
$-27.5 > M_B \geq -28.5$
$Z/Z_\odot $     10.0 5.0
$\beta $     -1.00 -1.02
$\Gamma $     -1.00 -1.54
N V/C IV 1.075 0.054 0.837 0.805
(O I+Si II)/C IV 0.133 0.010 0.250 0.088
C II/C IV 0.064 0.010 0.317 0.197
(Si IV+O IV])/C IV 0.409 0.020 0.426 0.445
N IV]/C IV 0.007 0.010 0.298 0.130
He II/C IV 0.095 0.010 0.178 0.204
(O III]+Al II)/C IV 0.075 0.010 0.373 0.257
a Errors adopted for carrying out model fittings. Values are changed from those presented in Table 7; see text for details.
b Model predictions with fixed $\beta $ and $\Gamma $ and those with varying $\beta $ and $\Gamma $ are given in the left and right columns, respectively.

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