\documentclass[tikz]{standalone}
\input{../PlotPreamble.tex}
\begin{document}
\small
\begin{tikzpicture}
\begin{axis}[
	width=7.5cm,
	height=6.5cm,
	ybar,
	bar width=0.75,
	xtick align=inside,
	xlabel ={Measurement point},
	ylabel ={RSSI in \si{\dBm}},
	legend pos=north east,	
	xmajorgrids=true,
	%xminorgrids=true,
	ymajorgrids=true,
	%yminorgrids=true,
	%enlarge x limits=false,
	%enlarge y limits=false,
	ymax=-55,
	ymin=-75,
	xtick={1,2,3,4,5,6,7,8,9,10,11,12,13},
]
\addplot [ta2skyblue, fill=ta2skyblue] table[x=X,y=RSSI,col sep=comma]{../data/BSTMean2.csv}; 
%\addplot [blue, mark=x] table[x=X,y=RSSI,col sep=comma]{../data/BSTMean2.csv}; 
\end{axis}
\end{tikzpicture}
\end{document}