\begin{table}%t2
\caption{Comparison between results for the parameter~$b_{\perp}$ from various theories: QLT, BAM-model, NLGC-theory, WNLT, ENLGC-theory, 
and the GCD-model. Negative values of~$b_{\perp}$ correspond to subdiffusion, positive values to superdiffusion, and $b_{\perp}=0$ corresponds to diffusion.}\label{tab2}
%\centering
\small
\begin{tabular}{lll}
\hline\hline
Theory          		& slab turbulence       	& slab/2D composite	\\
\hline
Simulations     	& $-0.5$                		& $\approx$$-0.2$  	\\
\hline
QLT             		& $0$               		& $1.0$            	 	\\
BAM             		& $0$               		& $0$               		\\
NLGC            		& $0$               		& $0$               		\\
WNLT            		& $0$               		& $0$               		\\
ENLGC           	& $-1/2$                		& $0$               		\\
GCD-model      	& $-1/2$                		& $\approx$$-0.2$	\\
\hline
\end{tabular}
\end{table}