\begin{table}%t1
%\centering
\par
\caption {{Values of the parameters used in the simulations. The
    effect of some variables on the results was studied by altering their values within a plausible range. For example, several values of porosities, 
dust-to-ice ratios, and thermal inertia were used in the simulations.\label{tabla}}}
\begin{tabular}{ccc}
\hline\hline
Parameter & Value(s) & Units\\
\hline
Surface temperature 	&		140, 150, 160   		& K \\
$R_{\rm{g}} $                	&		8.314 			& J~K$^{-1}$~mol$^{-1}$\\
$\mu$ 				&   		18. 				& g~mol$^{-1}$ \\
$\rho^{\rm{H_2O,c}}$	&  		920.				&kg~m$^{-3}$\\
$\rho^{\rm{dust,c}}$		&		2500.			&kg~m$^{-3}$\\
$c^{\rm{H_2O}}$		&		7.49$\cdot$$T$+90.	&J~kg$^{-1}$~K$^{-1}$\\
$c^{\rm{dust}}$			&		5.$\cdot$$T$		&J~kg$^{-1}$K$^{-1}$\\ 
$K_{\rm{am}}$			&		$7.1\times 10^{-5}T$&W~m$^{-1}$K$^{-1}$\\
$K_{\rm{cr}}$			&		567./$T$			&W~m$^{-1}$K$^{-1}$\\
$K_{\rm{dust}}$		&		2.				&W~m$^{-1}$K$^{-1}$\\
%$I (Thermal inertia)$        	& 		20, 100, 400		& W~K$^{-1}$~m$^{-2}$~s$^{1/2}$\\
\par
\hline
$T$ (initial) 				& 		30., 70			& K\\
$\rho^{\rm{am}}$(initial)    & 		19--636 		 &kg~m$^{-3}$\\
$\rho^{\rm{dust}}$   		& 		 36--667			 & kg~m$^{-3}$\\  
$p$ (initial porosity) 		&                0.28--0.82		  & \\
bulk density 		         & 		250, 400, 700  		& kg~m$^{-3}$ \\
Thermal inertia 		& 		20, 100, 400 		& W K$^{-1}$ m$^{-2}$ s$^{1/2}$ \\
dust-to-ice ratio                 &                0.1, 1, 20 & \\
radius & 1000 & m \\
depth & 5  & m \\
\hline
\end{tabular}
\end{table}