fit of [H]{}[i]{} column density.

16. J223941.8-294955 ($z_{\rm em}=2.102$). This quasar was discovered during the course of the 2dF quasar redshift survey. The absorber at $z_{abs}=1.825$ in this quasar has been reported before by @cappetta10 with a column density of log $N_{{\rm H}\,{\sc \rm I}}=20.60$ (where [H]{}[i]{} fit was not shown). We fit the [H]{}[i]{} of the absorber again and find that the absorber at $z_{\rm abs}=1.825$ fits well with [H]{}[i]{} column density of log $N_{{\rm H}\,{\sc \rm I}}=19.84\pm0.14$ and $b=53.0\pm4.7$ km s$^{-1}$. Emission is clearly seen in the trough of this absorber which is likely to correspond to the Lyman-$\alpha$ emission from the sub-DLA host. Several metal absorption lines from [O]{}[i]{} $\lambda$ 1302, [Fe]{}[ii]{} $\lambda\lambda\lambda\lambda\lambda\lambda$ 1144, 1608, 2344, 2374, 2382, 2586, [Si]{}[ii]{} $\lambda\lambda\lambda\lambda\lambda$ 1193, 1260, 1304, 1526, 1808, [C]{}[ii]{} $\lambda$ 1334, [Al]{}[ii]{} $\lambda$ 1670, [Mg]{}[ii]{} $\lambda\lambda$ 2796, 2803, [Al]{}[iii]{} $\lambda\lambda$ 1854, 1862, [Si]{}[iv]{} $\lambda\lambda$ 1393, 1402, and [C]{}[iv]{} $\lambda\lambda$ 1548, 1550 associated with sub-DLA are covered in the red part of the spectrum. Fig. \[J223941.8-294955\] shows our best fit result of neutral hydrogen column density fit.

17. QSO B2318-1107 ($z_{\rm em}= 2.960$). A DLA was previously known at $z_{\rm abs}=1.989$ along the line-of-sight of the quasar [@noterdaeme07; @fox09]. We 