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


begin{tikzpicture}
begin{axis}[
    title = {X},
    width=7cm,
height= 9cm,
    xtick={1,...,3},
    xticklabels={%
        c1,
        c2,
        c3},
    ybar,
    ymajorgrids=true,
          x tick label style={rotate=45,anchor=east},
    x=70,
bar width=0.5cm,
enlarge x limits={abs=0.5cm},
ylabel = {V},
legend pos=outer north east,
enlarge y limits={0.55,upper},
enlarge y limits={0.386,lower},
enlarge x limits=0.25
           ]

addplot[
    fill=blue!25,
    draw=black,
    point meta=y,
    every node near coord/.style={inner ysep=10pt},
    error bars/.cd,
        y dir=both,
        y explicit
]
table [y error=error] {
x   y           error    label
1   9.642857143   1.949620581 1
2   9.357142857    2.767338661 2
3   11.85714286   3.907084095 3
};

addplot[
    fill=red!25,
    draw=black,
    point meta=y,
    every node near coord/.style={inner ysep=10pt},
    error bars/.cd,
        y dir=both,
        y explicit
]
table [y error=error] {
x   y           error    label
1   9.071428571   2.520325538 1
2   8.642857143    4.26961261 1
3   7.0714286   2.4042904 1
};

draw ({rel axis cs:0,0}|-{axis cs:0,0}) -- ({rel axis cs:1,0}|-{axis cs:0,0});
legend{one,two}

end{axis}
end{tikzpicture}


end{document}