\documentclass[]{article}

\usepackage{pgf,tikz}
\usepackage{pgfplots}

\begin{document}

\begin{tikzpicture}
[scale=0.5]
\begin{axis}[
ybar,
enlarge x limits=0.04,
enlarge y limits=0,
legend style={at={(0.5,-0.3)}, anchor=north,legend columns=-1},
nodes near coords style={anchor=west, rotate=90},
ylabel={Time (ns)},
width=20cm,
symbolic x coords=
   {A,
    B,
    C,
    D,
    E,
    F,
    G,
    H,
    I,
    J,
    K,
    L,
    M,
    N,
    O,
    P,
    Q,
    R,
    S,
    T,
},
xtick=data,
ymin=0,
ymax=1700,
restrict y to domain*=0:10000,
visualization depends on=rawy\as\rawy,
after end axis/.code={\draw [ultra thick, white, decoration={snake, amplitude=1pt}, decorate] (rel axis cs:0,1.05) -- (rel axis cs:1,1.05);},
nodes near coords={\pgfmathprintnumber{\rawy}},
clip=false,
%nodes near coords align={vertical},
x tick label style={rotate=60,anchor=east}
]

\addplot coordinates {
    (A,27.53  )
    (B,33.71  )
    (C,9238.36)
    (D,9184.26)
    (E,119.82 )
    (F,57.62  )
    (G,28.11  )
    (H,101.59 )
    (I,245.64 )
    (J,316.80 )
    (K,107.50 )
    (L,334.93 )
    (M,395.91 )
    (N,558.37 )
    (O,588.47 )
    (P,166.14 )
    (Q,183.95 )
    (R,619.40 )
    (S,95.75  )
    (T,134.50 )};

\addplot coordinates {
    (A,79.48  )
    (B,95.78  )
    (C,9926.58)
    (D,9864.55)
    (E,314.25 )
    (F,165.87 )
    (G,58.52  )
    (H,188.77 )
    (I,188.34 )
    (J,343.45 )
    (K,196.34 )
    (L,1387.44)
    (M,1671.64)
    (N,604.58 )
    (O, 688.11)
    (P,286.23 )
    (Q,936.79 )
    (R,757.05 )
    (S,205.32 )
    (T,200.74 )};
\legend{Do not collides,Collides}
\end{axis}
\end{tikzpicture}

\end{document}


\end{document}