\begin{Schunk}
\begin{Sinput}
 confint(mod3)
\end{Sinput}
\begin{Soutput}
                 2.5 %    97.5 %
(Intercept)  38.159150 43.023565
instcstP1000  2.015515  2.537295
\end{Soutput}
\end{Schunk}
