[![enter image description here](https://i.stack.imgur.com/V9yX2.png)](https://i.stack.imgur.com/V9yX2.png)I have inserted a table, originally from `Excel`, into a `Beamer` presentation. The table does not fit into the frame and I used `resizebox` to make it fit. This renders the table unreadable. Is there a solution to this? Here is an MWE:

```
    \documentclass[10pt,aspectratio=169]{beamer}
    \usetheme{Boadilla}
    \usecolortheme{dove}
    \setbeamertemplate{frametitle}[default][center]
    \setbeamertemplate{itemize items}[default]
    \setbeamertemplate{enumerate items}[default]
    \setbeamertemplate{itemize/enumerate subbody begin}{\tiny}
    \usepackage{color} 
    \usepackage[export]{adjustbox}
    \usepackage{mdwmath}
    \usepackage{mdwtab}
    \usepackage{tabularx,booktabs}
    \newcolumntype{C}{>{\centering\arraybackslash}X} % centered version of "X" type
    \setlength{\extrarowheight}{1pt}
    \usepackage{subfig}
    \usepackage{multicol}
    \usepackage{array}

    \begin{document}
    \begin{frame}

    \begin{table}[htbp]
          \centering
          \caption{Resistivity of samples prepared from $ 0.5\:mg/ml $ CNT solution}
          \resizebox{\textwidth}{!}{
            \begin{tabularx}{1.8\textwidth}{ccccccccrrr}
                  &      & \multicolumn{3}{c}{Resistivity on cellulose filter} & \multicolumn{3}{c}{Resistivity after transferring to glass substrate} & \multicolumn{3}{c}{Resistivity after baking the transferred samples} \\
            Volume of solution used for sample (ml) & Thickness (micron) & Resistance & Sheet Resistance & Resistivity (OHM cm) & Resistance & Sheet Resistance & Resistivity (OHM cm) & \multicolumn{1}{c}{Resistance} & \multicolumn{1}{c}{Sheet Resistance} & \multicolumn{1}{c}{Resistivity (OHM cm)} \\
            10    & 3.015 & 16.32860687 & 73.96858911 & 0.02230153 & 27.89651855 & 126.371229 & 0.038100926 &       &       &  \\
            20    & 6.8375 & 7.248137422 & 32.83406252 & 0.02245029 & 13.77673335 & 62.40860206 & 0.042671882 &       &      &   \\
            \end{tabularx}%
        }
          \label{conductivitymeasure}%
        \end{table}%

\end{frame}     
\end{document}

```