# Sum of sub-bars on top of stacked bars in tikz

I want to be able to display the sum of the values on top of the bars. Below is my code and under that, an illustrated image that displays the values I want to show. Can this be done?

\documentclass{article}
\usepackage{pgfplots}
\pgfplotsset{compat=1.14}
\usepackage{tikz}
\begin{document}
\begin{tikzpicture}
\begin{axis}[
ybar stacked,
bar width=15pt,
ymin=0,
nodes near coords,
%enlargelimits=0.15,
legend style={at={(0.5,-0.15)},
anchor=north,legend columns=-1},
ylabel={Seconds (s)},
symbolic x coords={t1, t2, t3, t4},
xtick=data,
x tick label style={rotate=41,anchor=east},
]
\addplot+[ybar] plot coordinates {(t1, 70) (t2, 94) (t3, 70) (t4, 70)};
\addplot+[ybar] plot coordinates {(t1, 43) (t2, 43) (t3, 61) (t4, 71)};
\legend{\strut d1,\strut  d2,\strut  d3}
\end{axis}
\end{tikzpicture}
\end{document}


\n

Edit:

\pgfplotsset{compat=1.14}


makes it so that the values reside inside the bars. Without it, a sum of values are stacked on top of the bars. I do however want the sum at the top, then the value of each bar displayed inside of them, just as in the illustration.