\begin{figure}[b]

\centering
\caption{Example of Stop with Sub-Stops A, B, and C}
\label{fig:example_sub}
\scalebox{1.15}{
\begin{tikzpicture}
%\draw[color=black, dashed] (1, 3) circle (0.1) node at (1,2.1) {[8:00-18:00]};
\footnotesize
\draw (1,0.35) ellipse (2.60cm and 0.85cm);
\draw[color=black, dashed] (2.25, 0.5) circle (0.35) node at (2.25, -0.05) {Sub-stop C};
\draw[color=black, dashed] (1, 0.25) circle (0.35) node at (1, -0.30) {Sub-stop B};
\draw[color=black, dashed] (-.1, 0.50) circle (0.35) node at (-.1, -0.05) {Sub-stop A};

%Trajectory
%\draw[color=black, fill=black] (1.65, -0.50) circle (0.045);
%\draw[color=black, fill=black] (1.55, -0.40) circle (0.045);
%\draw[color=black, fill=black] (1.5, -0.65) circle (0.045);
%\draw[color=black, fill=black] (1.55, -0.625) circle (0.045);
%\draw[color=black, fill=black] (1.55, -0.625) circle (0.045);
%\draw[color=black, fill=black] (1.75, -0.3) circle (0.045);
%\draw[color=black, fill=black] (1.75, -0.55) circle (0.045);
\draw[color=black, fill=black] (-2.15, 0.60) circle (0.045);
\draw[color=black, fill=black] (-1.95, 0.65) circle (0.045);
\draw[color=black, fill=black] (-1.80, 0.50) circle (0.045);
\draw[color=black, fill=black] (-1.65, 0.55) circle (0.045);
\draw[color=black, fill=black] (-1.50, 0.60) circle (0.045);
\draw[color=black, fill=black] (-1.30, 0.45) circle (0.045);
\draw[color=black, fill=black] (-1.15, 0.55) circle (0.045);
\draw[color=black, fill=black] (-0.95, 0.45) circle (0.045);
\draw[color=black, fill=black] (-0.75, 0.50) circle (0.045);
\draw[color=black, fill=black] (-0.55, 0.55) circle (0.045);
\draw[color=black, fill=black] (-0.40, 0.40) circle (0.045);
\draw[color=black, fill=black] (-0.10, 0.35) circle (0.045);
\draw[color=black, fill=black] (-0.10, 0.45) circle (0.045);
\draw[color=black, fill=black] (-0.25, 0.35) circle (0.045);
\draw[color=black, fill=black] (-0.15, 0.55) circle (0.045);

\draw[color=black, fill=black] (0.75, 0.25) circle (0.045);
\draw[color=black, fill=black] (0.55, 0.35) circle (0.045);
\draw[color=black, fill=black] (0.35, 0.40) circle (0.045);
\draw[color=black, fill=black] (0.15, 0.35) circle (0.045);
\draw[color=black, fill=black] (0.05, 0.35) circle (0.045);

\draw[color=black, fill=black] (1.10, 0.15) circle (0.045);
\draw[color=black, fill=black] (1.20, 0.15) circle (0.045);
\draw[color=black, fill=black] (1.05, 0.05) circle (0.045);
\draw[color=black, fill=black] (1.00, 0.10) circle (0.045);
\draw[color=black, fill=black] (1.00, 0.35) circle (0.045);
\draw[color=black, fill=black] (1.20, 0.35) circle (0.045);
\draw[color=black, fill=black] (1.00, 0.35) circle (0.045);
\draw[color=black, fill=black] (1.00, 0.25) circle (0.045);
\draw[color=black, fill=black] (0.95, 0.25) circle (0.045);

\draw[color=black, fill=black] (1.30, 0.55) circle (0.045);
\draw[color=black, fill=black] (1.35, 0.65) circle (0.045);
\draw[color=black, fill=black] (1.48, 0.65) circle (0.045);
\draw[color=black, fill=black] (1.58, 0.72) circle (0.045);
\draw[color=black, fill=black] (1.70, 0.7) circle (0.045);
\draw[color=black, fill=black] (1.82, 0.58) circle (0.045);

\draw[color=black, fill=black] (2.05, 0.58) circle (0.045);
\draw[color=black, fill=black] (2.25, 0.58) circle (0.045);
\draw[color=black, fill=black] (2.37, 0.58) circle (0.045);

\draw[color=black, fill=black] (2.25, 0.45) circle (0.045);
\draw[color=black, fill=black] (2.10, 0.35) circle (0.045);
\draw[color=black, fill=black] (2.40, 0.40) circle (0.045);
\draw[color=black, fill=black] (2.30, 0.30) circle (0.045);

\draw[color=black, fill=black] (2.55, 0.50) circle (0.045);
\draw[color=black, fill=black] (2.75, 0.40) circle (0.045);
\draw[color=black, fill=black] (2.95, 0.50) circle (0.045);
\draw[color=black, fill=black] (3.15, 0.45) circle (0.045);
\draw[color=black, fill=black] (3.35, 0.35) circle (0.045);
\draw[color=black, fill=black] (3.55, 0.50) circle (0.045);
\draw[color=black, fill=black] (3.75, 0.60) circle (0.045);
\draw[color=black, fill=black] (3.90, 0.45) circle (0.045);
\draw[color=black, fill=black] (4.20, 0.55) circle (0.045);
\end{tikzpicture}
}
\end{figure}