\begin{table}%t5
%\centering
\small 
\caption{The receiver
  performance for a typical channel from each of the B{\sc oomerang} bands,
  computed from a receiver model using the observed average in-flight loading conditions.
  The performance measured in flight is consistent with these estimates.
\label{tab:boloinflight}}
\begin{tabular}{lcrrr}
\hline\hline
& units &  145 & 245 & 345 \\
\hline  
%%Number of Detectors \dotfill & & 8 & 4 & 4 \\
%%Center freq. \dotfill &GHz  &   146.1  &   248.0  &   340.0 \\
%%Bandwidth\dotfill &GHz    &    41.0  &    72.0  &   120.0 \\
Optical power  &pW &     0.496  &   0.846  &   6.158 \\
Equivalent R-J temperature &K&4&4&16\\
\hspace{5mm}CMB/total  &\%&    23.0  &    6.2  &   0.9 \\
\hspace{5mm}Atmos./total  &\%&     4.1  &  32.6 &   64.7 \\
\hspace{5mm}Refl./total  &\%&    21.4  &  17.2  &   10.0 \\
\hspace{5mm}Internal/total  &\%&   51.5  &  44.0  &  24.4\\
\hline
\noalign{\smallskip}
%%Elec. power\dotfill & pW  &   0.62  &   1.99  &   5.65 \\
%%Bias current\dotfill & nA  &   0.27  &   0.46  &   0.96 \\
%%Physical $G$\dotfill & pW/K &    22.9  &  59.5 &  173.3 \\
%%Effective $G$\dotfill & pW/K  &  31.0  &  72.4 &  220.6 \\
%%\hspace{5mm}Ratio\dotfill  & &    1.35   & 1.22   & 1.27 \\
%%Bolometer temp. \dotfill & K &     0.326  &   0.322  &   0.347  \\
%%Bolo. impedance\dotfill &M$\Omega$ &     8.63 &    9.28 &     6.17 \\
%%Responsivity\dotfill & nV/W &     0.72 &    0.46 &    0.21 \\
%%Opt. time constant\dotfill &ms &    80.5 &   33.8 &    12.4 \\
NEP$_{{\rm total}}$  &$10^{-17}$ W/$\!\sqrt{{\rm Hz}}$ & 2.49 & 3.89 & 8.95 \\
\hspace{5mm}NEP$_{{\rm photon}}$ &$10^{-17}$ W/$\!\sqrt{{\rm Hz}}$  & 0.99 & 1.64  &   5.31 \\
\hspace{10mm}Bose term &\% &  14.8  & 7.2 &  16.4 \\
\hspace{5mm}NEP$_{{\rm phonon}}$ &$10^{-17}$ W/$\!\sqrt{{\rm Hz}}$ &   1.003  &   1.636  &   2.891 \\
\hspace{5mm}NEP$_{{\rm johnson}}$ &$10^{-17}$ W/$\!\sqrt{{\rm Hz}}$&    1.307 &    1.839 &    3.669 \\
\hspace{5mm}NEP$_{{\rm amplifier}}$ &$10^{-17}$ W/$\!\sqrt{{\rm Hz}}$&  1.578 &   2.518 &   5.494 \\
NEP$_{{\rm bolo}}$ / NEP$_{{\rm background}}$  &   &  1.67  &   1.50  &   0.88 \\
\hline
\noalign{\smallskip}
NEFD &mJy/$\!\sqrt{{\rm Hz}}$ &     37   &  43 &   177 \\
NET$_{{\rm cmb}}$ & $\mu{\rm K}_{{\rm CMB}}\!\sqrt{{\rm s}}$  &    151 &   341 &   551 \\
NET$_{{\rm RJ}}$  &  $\mu{\rm K}_{{\rm RJ}}\!\sqrt{{\rm s}}$ &     89  &   92  &   51 \\
NET$^{{\rm inst}}_{{\rm cmb}}$  & $\mu{\rm K}_{{\rm CMB}}\!\sqrt{{\rm s}}$ & 53  &  171  &  275 \\
\hline
Voltage noise &nV/$\!\sqrt{{\rm Hz}}$ & 18.0  & 17.7  &   18.5 \\
\hline
\end{tabular}
\end{table}