Table 1: Metal absorption-line systems toward HS 0747+4259.
z1= 1.9157: Ly $_{\alpha-\delta}$; C IV 1548,1550; O IV787
z2= 1.9070: Ly $_{\alpha-\varepsilon}$; C IV 1548,1550; O IV787
z3= 1.8766: Ly $_{\alpha-\varepsilon}$; C IV 1548,1550; O IV787
z4= 1.8617: Ly $_{\alpha-\gamma}$; C IV 1548,1550; O IV787; O VI1031
z5= 1.8533: Ly $_{\alpha-\gamma}$; C IV 1548,1550; O IV787; O VI1031
z6= 1.8073: Ly1-12; C II1334; Si II1260; C III977; O III832; Si III1206; C IV 1548,1550; O IV787; Si IV 1393,1402; N V1238; O VI 1031,1037
z7= 1.7790: Ly $_{\alpha,\beta}$; C IV 1548,1550; O VI1031
z8= 1.7744: Ly $_{\alpha-\varepsilon}$; C III977; C IV 1548,1550; O IV787; O VI1031
z9= 1.7302: Ly1-8; C III977; Si III1206; O III832; C IV 1548,1550; O IV787; Si IV1393; O VI 1031,1037
z10= 1.7154: Ly $_{\alpha-\varepsilon}$; C IV1548; O VI1031
z11= 1.6331: Ly $_{\alpha-\varepsilon}$; O III832; C IV 1548,1550; O VI1031
z12= 1.6134: Ly1-7; C III977; O III832; C IV 1548,1550; O VI 1031,1037
z13= 1.5955: Ly1-7; C III977; O III832; Si III1206; C IV 1548,1550; Si IV1393; O VI 1031,1037
z14= 1.5401: Ly $_{\beta-\gamma}$; C III977; C IV 1548,1550; Si IV 1393,1402; O VI 1031,1037
z15= 1.4856: Ly$_{\beta}$; C III977; C IV 1548,1550; O VI1031
z16= 1.4648: Ly $_{\beta-\varepsilon}$; C III977; C IV 1548,1550; O VI 1031,1037
z17= 1.2910 Ly $_{\alpha-\beta}$; C III977; C IV 1548,1550; O VI1031
z18= 1.1896 Ly $_{\alpha-\beta}$; C III977; C IV 1548,1550; O VI1031
z19= 1.0778 Ly$_{\alpha}$; C II1334; Si II1260; Si III1206; Al III1854; C IV 1548,1550; Si IV 1393,1402; O VI 1031,1037
z20= 1.0487 Ly$_{\alpha}$; C IV 1548,1550
z21= 0.9277 Ly$_{\alpha}$; Si II1260; Si III1206; Al III1854
z22= 0.2616 Mg II 2796,2803
z23= 0.2237 Mg II 2796,2803; Fe II2600
z24= 0.2033 Mg II 2796,2803; Fe II2382
z25= 0.0 Mg I2853; Mg II 2796,2803; Ca II 3934,3969; Mn II 2594,2577; Fe II 2600,2586,2382,2374,2344,2260


Note: O VI  $\lambda\lambda1031,1037$ lines from systems with $z_{\rm abs}$ > 1.8617 fall in the gap between the HST/STIS and Keck/HIRES spectra.


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