I have designed a table that is looking well except for one part, that is not aligned vertically to the center. I think it has to do with the line separating "Property at 27ºC" from the actual properties bellow it, and this `\cline` is covering a bit of the text bellow it.

This is the code:

```
\begin{table}[]
\centering
\begin{tabular}{lcccc}
\toprule
\multicolumn{1}{c}{\multirow{2}{*}{Process}} & \multicolumn{4}{c}{Property at 27ºC} \\ \cline{2-5}
\multicolumn{1}{c}{}        & S      & $\sigma$    & k       & zT       \\
\midrule
Unannealed                  & 140    & 1052        & 9.73    & 0.0636   \\
Annealed at 1345ºC          & 155    & 768         & 7.67    & 0.0722   \\
Annealed at 1365ºC          & 151    & 845         & 6.00    & 0.0964   \\
\bottomrule
\end{tabular}
\caption{Influence of annealing at 27ºC}
\label{tab:influenceofannealing}
\end{table}

```

And this is what it looks like:

[![Table I have now](https://i.stack.imgur.com/1yJ8m.png)](https://i.stack.imgur.com/1yJ8m.png)

Is there a way I can set the text of the four columns a bit lower or set as vertically centered to the confined space? Also set the cell "Property at 27ºC" a bit higher?

Thanks in advance!