I use the following table:

\documentclass[a4paper, 12pt, bibliography=totoc, index=totoc, abstracton, headsepline, ]{scrreprt} \usepackage{booktabs} \begin{document} \begin{table}[H]\hspace*{-1cm} \centering \begin{tabular}{lcclll} \toprule Company& \multicolumn{2}{c}{exceedances (empirical)}&exeedances (expected)&no. of obs.\\ \cmidrule(r){2-3}\\ &standard normal&standardized Student's-t&&\\ \midrule Company1&1&5&9&13\\ Company2&2&6&10&14\\ Company3&3&11&15\\ Company4&4&8&12&16\\ \bottomrule \multicolumn{4}{l}{\begin{footnotesize}an additional hint about a detail\end{footnotesize}} \end{tabular} \caption{Here is the caption.} \label{labelhere} \end{table} \end{document} 

Which gives

I have two problems:

1. The space after the \cmidrule(r){2-3} is too big, how can I change this?
2. The table looks not that good, how can I improve it in general?