Polar Axes Radians

Question

You can see from this example (found online) I have a radius of 1. Is there a way to increase the radius to four or five? I am trying to make a template for my students to graph on.

\documentclass[11pt]{minimal}
\usepackage{pgfplots}
\usepackage{tikz}
\usepgfplotslibrary{polar}
\usepackage{pgfplots}
    \pgfplotsset{compat=newest}
 
\pgfplotsset{my style polar/.append style={xticklabels={,,
$\frac{\pi}{6}$, $\frac{\pi}{3}$, $\frac{\pi}{2}$, $\frac{2\pi}{3}$,
$\frac{5\pi}{6}$, $\pi$, $\frac{7\pi}{6}$, $\frac{4\pi}{3}$,
$\frac{3\pi}{2}$, $\frac{5\pi}{3}$,$\frac{11\pi}{6}$,}, thick }}

\begin{document}

\begin{tikzpicture}
\begin{polaraxis}[my style polar]
\end{polaraxis}
\end{tikzpicture}
\end{document}

Any help would be appreciated. I tried looking the PGFPlots manual in 5.10, but I didn't see how they were able to change the radius unless I had a graph.

Answer 1

\documentclass[border=1cm]{standalone}
\usepackage{pgfplots}
\pgfplotsset{compat=1.18}
\usepgfplotslibrary{polar}
\pgfplotsset{my style polar/.append style={xticklabels={,,
$\frac{\pi}{6}$, $\frac{\pi}{3}$, $\frac{\pi}{2}$, $\frac{2\pi}{3}$,
$\frac{5\pi}{6}$, $\pi$, $\frac{7\pi}{6}$, $\frac{4\pi}{3}$,
$\frac{3\pi}{2}$, $\frac{5\pi}{3}$,$\frac{11\pi}{6}$,}, thick }}
\begin{document}
\begin{tikzpicture}
\begin{polaraxis}[my style polar, ymax=4]
\end{polaraxis}
\end{tikzpicture}
\end{document}