& \multicolumn{4}{c}{\textbf{Subjective quality}} \\
\cmidrule(l{.75em}){2-5} 
\textbf{Prediction} & High & Medium & Low & Total \\
\hline
Accurate estimation \%&48.1&16.7&42.6&28.3 \\
Under estimation \%&0.0&36.6&51.5&25.8 \\
Over estimation \%&51.9&46.7&5.9&45.9 \\
Total \%&100.0&100.0&100.0&100.0 \\
