I want the horizontal lines to go across the second column; form start to the end of the second column. I found some suggestions to make a nested table, But couldn't understand those. This my code:
\documentclass{article}
\usepackage{array,multirow}
\usepackage{booktabs}
\begin{document}
\begin{tabular}{|c|c|c|c|c|}\hline
a & \begin{tabular}{c | c}
angel & value
\end{tabular} & Overshoot & Settling time & Rise time \tabularnewline\hline
Case i
&
\begin{tabular}{c|@{}c@{}}
$\theta_i$ & \begin{tabular}{c}
0 \\ 0 \\ 0 \\ 0
\end{tabular}
\tabularnewline\hline
$\theta_f$ & \begin{tabular}{c}
30 \\ 30 \\ 30 \\ 30
\end{tabular}
% \tabularnewline\hline
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
\tabularnewline\hline
Case ii
&
\begin{tabular}{c|@{}c@{}}
$\theta_i$ & \begin{tabular}{c}
30 \\ 30 \\ 30 \\ 30
\end{tabular}
\tabularnewline\hline
$\theta_f$ & \begin{tabular}{c}
60 \\ 60 \\ 60 \\ 60
\end{tabular}
% \tabularnewline\hline
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
\tabularnewline\hline
Case iii
&
\begin{tabular}{c|@{}c@{}}
$\theta_i$ & \begin{tabular}{c}
90 \\ 60 \\ 45 \\ 75
\end{tabular}
\tabularnewline\hline
$\theta_f$ & \begin{tabular}{c}
120 \\ 90 \\ 105 \\ 135
\end{tabular}
% \tabularnewline\hline
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
\tabularnewline\hline
Case iv
&
\begin{tabular}{c|@{}c@{}}
$\theta_i$ & \begin{tabular}{c}
120 \\ 90 \\ 105 \\ 135
\end{tabular}
\tabularnewline\hline
$\theta_f$ & \begin{tabular}{c}
150 \\ 120 \\ 135 \\ 165
\end{tabular}
% \tabularnewline\hline
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
&
\begin{tabular}{c}
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
1 \\
\end{tabular}
\tabularnewline\hline
\end{tabular}
\end{document}]