\begin{table}%T2
\caption{\label{tabobspca}Details of the data (analysis) for the 3 PCA superexpansion
  bursts. See also Figs.~\ref{figedge}, \ref{figsp}, and
  \ref{figdev}.}
\small%\centering
\par
\begin{tabular}{llll}
\hline\hline\noalign{\smallskip}
  & 4U~0614+09 & 4U~1722-30 & 4U~1820-30\tablefootmark{1} \\
\hline\\[-3mm]
Start time in spacecraft clock seconds\tablefootmark{2}  & 223~941~163.45 & 90~054~034.88 & 179~459~214.38 \\
UTC             & 4-Feb.-01 & 8-Nov.-96 & 9-Sep.-99 \\
                & 21:52:34 & 7:00:31 & 1:47:58 \\
Active PCUs & 0, 1, 2, 3 & 0 , 1, 2, 3, 4 & 0, 2, 3 \\
Time interval of superexpansion\tablefootmark{3} & 0.04$-$1.2 & 3.63$-$5.26 & 15$-$17 \\
End time of moderate expansion\tablefootmark{3}  & 89 & 23 & 1400 \\
Time interval with available burst catcher mode data$^3$ & 0.93/35.93 & $-$0.25/3.25 & n/a \\
 & & 7.75/97.50 & \\
Time/channel resolution burst catcher mode data & 8~ms/64 & 2~ms/64 & n/a \\
Time/channel resolution science event mode data & 125~$\mu$s/64 & 16~$\mu$s/64 & n/a \\
Time/channel resolution resolution standard-2 data & 16~s/129 & 16~s/129 & 16~s/129 \\
Time interval of initial spectral study (Fig.~\ref{figdev})$^3$ & 7.0$-$23.0 & -- & 325.1$-$1861.1 \\
Time interval of ``pre-burst'' spectrum$^3$& $-$740/$-$100 & +5760/+9220$^4$ & $-$3140/$-$2320\\
\hline 
\end{tabular} 
\tablefoot{\tablefoottext{1}{4U~1820-30 data is accumulated only for the upper xenon layers;}
\tablefoottext{2}{in spacecraft clock seconds (i.e., seconds since Jan. 1, 1994,
0:00:00.00~UTC);} 
\tablefoottext{3}{time in seconds since start time;} 
\tablefoottext{4}{For
  4U~1722-30 data were taken {\em after} the burst because pre-burst
  data are contaminated by a recent emergence of the spacecraft from
  the South Atlantic Geomagnetic Anomaly.}}
\end{table}