\begin{Schunk}
\begin{Sinput}
 confint(mod1)
\end{Sinput}
\begin{Soutput}
                   2.5 %       97.5 %
(Intercept) 11.389545676 11.986731369
elevation   -0.003638196 -0.002837176
\end{Soutput}
\end{Schunk}
