\begin{tabular}{lrrrrrr}
\toprule
Schema & Tasks & No skill & With skill & Skill delta & Positive tasks & Robustness ratio \\
\midrule
native & 0 & NA & NA & NA [NA, NA] & 0/0 & NA \\
obfuscated & 0 & NA & NA & NA [NA, NA] & 0/0 & NA \\
restructured & 0 & NA & NA & NA [NA, NA] & 0/0 & NA \\
\bottomrule
\end{tabular}
