Ticks on the y axis not working as anticipated

Question

I am trying to have a plot where the ticks on the y axis are 1, 1.004, 1.008, 1.012, 1.016, and 1.02. However, only the ticks 1, 1, 1.01, 1.01, 1.02, 1.02 are shown in the figure (see below). I was under the assumption that if we write ytick={1, 1.004, 1.008, 1.012, 1.016, 1.02} then that sets the values written at each y tick in the figure. Could someone please explain to me why this is wrong and furthermore how to have it so that the ticks in the y axis are for 1, 1.004, 1.008, 1.012, 1.016, and 1.02 ? My code is here:

\begin{figure}[ht]
    \centering
    \pgfplotsset{scaled y ticks=false}
    \begin{tikzpicture}
        \begin{axis}[name=plot, ymin=1, xtick={0, ..., 10}, ytick={1, 1.004, 1.008, 1.012, 1.016, 1.02}, xlabel={\LARGE$b_1$}]
            \addplot[black, mark=*]
            table{./data/ratio_of_estimated_value_versus_optimal_value.txt};\label{ratio_estimated_value_versus_optimal_value}
        \end{axis}
    \end{tikzpicture}
    
    \caption{Ratio of the Estimated Value of the Game and the Optimal Value of the Game}
    \label{fig:my_label}
\end{figure}

Answer 1

For the decimal numbers to show up properly you should set precision=4 for displaying upto four significant figures.

\documentclass{article}

\usepackage{tikz}
\usepackage{pgfplots}

\pgfplotsset{compat=1.18}

\begin{document}
\begin{figure}[ht]
    \centering
    \pgfplotsset{y tick label style={/pgf/number format/.cd, scaled y ticks=false, fixed, precision=4}} %<------------ Here
    \begin{tikzpicture}
        \begin{axis}[name=plot, xtick={0, ..., 10}, ytick={1, 1.004, 1.008, 1.012, 1.016, 1.02}, xlabel={\LARGE$b_1$}]
            \addplot[black, mark=*]
            table{./table.txt};\label{ratio_estimated_value_versus_optimal_value}
        \end{axis}
    \end{tikzpicture}
    
    \caption{Ratio of the Estimated Value of the Game and the Optimal Value of the Game}
    \label{fig:my_label}
\end{figure}
\end{document}