\begin{table}%t3
%\centering
\caption{Fitted coefficients obtained after adjusting the stem temperature scans. $T_a$ is given in  $10^5$~$\rm counts/s/\degr C$ and $T_b$ is in $10^3$~$\rm counts/s/\degr C^2$.
The signal is indicated by $I$, where the subscripts~$b$ and $r$ denote 
the blue and red wing selection while the superscripts~+ and $-$ refer to the
modulation state of the magnetic field.}
\label{tabtempstem}
\begin{tabular}{ccccc}
\hline\hline
Signal	& PM1	& PM1  & PM2 & PM2 \\
	& $T_a$  	& $T_b$  & $T_a$  & $T_b$\\
\hline
$I_{b}^+$& 2.6 $\pm$ 0.2	& 2.2 $\pm$ 0.6   & 2.7 $\pm$ 0.2	&  1.9 $\pm$ 0.6\\
$I_{b}^-$&  2.5 $\pm$ 0.2	& 1.1 $\pm$ 0.6	&  2.6 $\pm$ 0.2  &   1.5 $\pm$ 0.6 \\
$I_{r}^+$& 1.6 $\pm$ 0.2	& 1.8 $\pm$ 0.6   & 1.7 $\pm$ 0.2	&  1.5 $\pm$ 0.6\\
$I_{r}^-$&  1.5 $\pm$ 0.2	& 2.2 $\pm$ 0.6	&  1.6 $\pm$ 0.2  &   1.9 $\pm$ 0.6 \\
\hline
\end{tabular}
\label{ctemp} 
\end{table}