在 tikz 中绘制累积正态分布

Question

我试图跟随杰克在 TikZ-PGF 中绘制钟形曲线稍作修改。

1）我只想要在截止处有红色虚线的单变量正态累积分布函数，但不知为何我的虚线看起来很别扭。

2）为什么 y 轴标签位于图的中间，而不是沿着 y 轴？

\documentclass{article}
\usepackage{pgfplots}
\begin{document}

\pgfmathdeclarefunction{gauss}{2}{%
  \pgfmathparse{1/(#2*sqrt(2*pi))*exp(-((x-#1)^2)/(2*#2^2))}%
}

    \begin{tikzpicture}
    \begin{axis}[
      no markers, domain=-4:4, samples=100,
      axis lines*=left, xlabel=$x$, ylabel=$y$,
      every axis y label/.style={at=(current axis.above origin),anchor=south},
      every axis x label/.style={at=(current axis.right of origin),anchor=west},
      height=4cm, width=7cm,
      xtick={-3,-2,-1,0,1,2,3}, ytick=\empty,
      enlargelimits=false, clip=false, axis on top,
      grid = none
      ]
       \draw[dashed, red, thick] (axis description cs: 1.32,0) -- (axis description cs:1.32, 1);
      \addplot [fill=cyan!20, draw=none, domain=-4:1.32] {gauss(0,1)} \closedcycle;
      \addplot [very thick,cyan!50!black] {gauss(0,1)};
    \end{axis}

    \end{tikzpicture}
\end{document}