add legend in graphic in PNG format

by Clecio Jung   Last Updated June 30, 2020 01:23 AM - source

I have the following chart in a png format that I need to include in latex file:

enter image description here

There is a way to add a legend over the figure using latex, like in the outline below?

enter image description here

Edit: Simple working code

\documentclass{article}
\usepackage{graphicx}

\begin{document}
\includegraphics[width=\textwidth]{tek00000.png}
\end{document}


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