I have the following script that generates a table that I am trying to format properly.
\documentclass[12pt]{article}
\usepackage{float}
\usepackage{booktabs}
\usepackage{graphicx}
\usepackage{multirow}
\begin{document}
\begin{table}[H]
\begin{tabular}{c@{\qquad}cccc@{\qquad}ccc@{\qquad}ccc@{\qquad}c}
\toprule
\multirow{2}{*}{\raisebox{-\heavyrulewidth}{Scenarios}} & \multicolumn{4}{c} {GAM} & \multicolumn{3}{c}{SCAM} & \multicolumn{3}{c}{Krig} \\
\cmidrule{2-10}
& {\tt tp} & {\tt cr} & {\tt ps} & {\tt ad} & {\tt mpi} & {\tt cv} & {\tt micv} & {\tt mat} & {\tt sph} & {\tt exp}\\
\midrule
Uniform & 1 & 2 & 3 & 1 & 2 & 3 \\
1 dominant & 1 & 2 & 3 & 1 & 2 & 3 \\
\bottomrule
\end{tabular}
\end{table}
\end{document}
The headers "GAM", "SCAM" and "Krig" are slightly off-centre (pushed to the right). How can this be fixed?
Also, I need the horizontal line below the "Krig" header to extend further to the right. I tried increasing the 10 to 15 in \cmidrule, but received an error.
Does someone know how this can be fixed? Any assistance is greatly appreciated.


\textitor\it,\bfseriesor\bf, etc and Will two-letter font style commands (\bf,\it, …) ever be resurrected in LaTeX?. – Werner Mar 16 '18 at 17:37