\documentclass[tikz]{standalone}
\input{../PlotPreamble.tex}
\begin{document}
\small
\begin{tikzpicture}
\begin{axis}[
	%width=15.7cm,
	width=8.2cm,
	height=6.5cm,
	xlabel ={Measurement point},
	ylabel ={Distance in \si{\meter}},
	legend pos=north east,	
	xmajorgrids=true,
	%xminorgrids=true,
	ymajorgrids=true,
	%yminorgrids=true,
	enlarge x limits=false,
	%enlarge y limits=false,	
	xtick={1,2,3,4,5,6,7,8,9,10,11,12,13},
	ytick distance=5
]
%\draw ({axis cs:7,0}|-{rel axis cs:0,1}) -- ({axis cs:7,0}|-{rel axis cs:0,0});
\addplot [color=black] table[x=X,y=GT,col sep=comma]{../data/BSTMean2.csv};  \addlegendentry{Groundtruth}
\addplot [color=blue] table[x=X,y=MeanDist,col sep=comma]{../data/BSTMean2.csv};  \addlegendentry{Mean distance}
\addplot [color=orange, mark=x, only marks, mark size=1.5pt, line width=0.5pt] table[x=X,y=Y,col sep=comma]{../data/BSTData2.csv};  \addlegendentry{Measured distance}
\end{axis}
\end{tikzpicture}
\end{document}