\begin{table}%t3
\caption{\label{tab:parameters}Parameters for the source, the observation and data analyses for \otto, \sette\ and \sax.}
%%\centering

\par
\begin{tabular}{lcccccc}
\hline \hline \noalign{\smallskip}
Pulsar names  & \multicolumn{2}{c}{\otto} &\multicolumn{2}{c}{\sette}&\multicolumn{2}{c}{\sax}\\
\hline
\multicolumn{2}{c}{Source parameters}  & &&\\
Right ascension (J2000.0) & \multicolumn{2}{c}{18$^{\rm h}$13$^{\rm m}$39\fs04} &\multicolumn{2}{c}{17$^{\rm h}$51$^{\rm m}$13\fs49} & \multicolumn{2}{c}{18$^{\rm h}$08$^{\rm m}$27\fs54}\\  
Declination (J2000.0) & \multicolumn{2}{c}{$-$33$^{\circ}$46$^{\prime}$22\farcs3}&\multicolumn{2}{c}{$-$30$^{\circ}$37$^{\prime}$23\farcs4} & \multicolumn{2}{c}{$-$36$^{\circ}$58$^{\prime}$44\farcs3}\\
Orbital period, $P_{\rm orb}$ (s) & \multicolumn{2}{c}{15~388.7229(2)} &\multicolumn{2}{c}{2545.342(2)}&\multicolumn{2}{c}{7249.156980(4)}\\
Projected semi-major axis, $a\sin i$ (lt-ms) & \multicolumn{2}{c}{390.633(9)}  &\multicolumn{2}{c}{10.125(5)}&\multicolumn{2}{c}{62.812(2)}\\
Eccentricity, $e$ & \multicolumn{2}{c}{${<}2.4 \times 10^{-5}$}  &\multicolumn{2}{c}{${<}1.3 \times 10^{-3}$}&\multicolumn{2}{c}{${<}1.2 \times 10^{-4}$}\\
Spin period, $P_{\rm S}$ (s) & \multicolumn{2}{c}{0.0031811056698(1)} &\multicolumn{2}{c}{0.002297172972(2)}&\multicolumn{2}{c}{0.00249391975978(6)}\\
Mean spin period  derivative, $\dot{P}_{\rm S}$ (s s$^{-1}$) & \multicolumn{2}{c}{6.7(7) $\times \ 10^{-19}$}&\multicolumn{2}{c}{$-$1.95(10) $\times \ 10^{-18}$}&\multicolumn{2}{c}{4.7(9) $\times \ 10^{-19}$}\\
Ascending node passage, $T_0$ (MJD) & \multicolumn{2}{c}{52797.8101689(9)}&\multicolumn{2}{c}{52~368.0129023(4)}&\multicolumn{2}{c}{52~499.9602472(9)}\\
Distance, $d$ (kpc) & \multicolumn{2}{c}{8} & \multicolumn{2}{c}{6.7}&\multicolumn{2}{c}{3.5}\\
Nominal DM (pc cm$^3$) &  \multicolumn{2}{c}{$\sim$200}&\multicolumn{2}{c}{$\sim$400} & \multicolumn{2}{c}{$\sim$100}\\
References  & \multicolumn{2}{c}{1} & \multicolumn{2}{c}{2} & \multicolumn{2}{c}{3, 4} \\
\hline
\multicolumn{2}{c}{Observation parameters}&&1${\rm st}$ &2${\rm nd}$&&\\
Central radio frequency, $\nu_{\rm obs}$ (GHz) &6.4105&8.4535&8.4535&8.4535&4.7495&6.3515\\
Data series time, $\Delta t$ (s)&25~053&10~669&17~145&22~864 &35~685&35~051\\
Sampling time, $\delta t_{\rm sam}$ ($\mu$s) &92&50&60&100&125&125\\
Samples number, $N_{\rm s}$&2$^{28}$&2$^{27}$&2$^{28}$&2$^{27}$&2$^{28}$&2$^{28}$\\
Nominal gain\tablefootmark{a}, $G$ (K Jy$^{-1}$)&0.46&0.59&\multicolumn{2}{c}{0.59}&\multicolumn{2}{c}{0.46}\\
System temperature\tablefootmark{a}, $T_{\rm sys}$ (K) &50&25&\multicolumn{2}{c}{25}&\multicolumn{2}{c}{50}\\
Number of 3 MHz channels, $N_{\rm c}$ &\multicolumn{2}{c}{192}&\multicolumn{2}{c}{192}&\multicolumn{2}{c}{192}\\
\hline
\multicolumn{2}{c}{Data analysis parameters}&&&&&\\
Number of DMs&186&151&195&127&135&57\\
DM range (pc cm$^3$)&\multicolumn{2}{c}{$\sim$50$\div$1000}&\multicolumn{2}{c}{$\sim$100$\div$1700}&\multicolumn{2}{c}{$\sim$20$\div$400}\\
Local DM (pc cm$^3$)&\multicolumn{2}{c}{$\sim$20}&\multicolumn{2}{c}{$\sim$260}&\multicolumn{2}{c}{$\sim$230}\\
Number of $P_{\rm orb}$ steps&\multicolumn{2}{c}{1}&\multicolumn{2}{c}{19}&\multicolumn{2}{c}{1}\\
Number of folding steps&\multicolumn{2}{c}{1}&\multicolumn{2}{c}{11}&\multicolumn{2}{c}{1}\\
\hline
\multicolumn{2}{c}{Other parameters}&&&&&\\
Sky temperature, $T_{\rm sky}$ (K)&0.06&0.03&\multicolumn{2}{c}{0.09}&0.13&0.06\\
Dispersion broadening, $\delta t_{\rm DM}$ ($10^{-8}$ s)&9.5 $\times$ DM & 4.2 $\times$ DM&\multicolumn{2}{c}{4.2 $\times$ DM}&23 $\times$ DM&9.7 $\times$ DM\\
Scattering broadening, $\delta t_{\rm scatt}$ (s)&$9.3 \times 10^{-9}$ & $3.2 \times 10^{-9}$&\multicolumn{2}{c}{$4.4\times 10^{-7}$} &$9.6 \times 10^{-9}$&$3 \times 10^{-9}$\\
\hline
\end{tabular}
\tablefoot {\tablefoottext{a}{Values derived from the Parkes website: \protect\url{http://www.parkes.atnf.csiro.au/observing/documentation/}.}}\vspace{-2mm}
\tablebib {(1) \citet{pdb+07}; (2) \citet{pmb+08}; (3) \citet{hpc+09}; (4) \citet{bdm+06}.}
\end{table}