\begin{table}%t1
 \caption{Results of the observed and calculated parameters of the 27 
 HartRAO Pulsars. \label{tb1}}
 %\centering
\par
\begin{tabular}{lccccccccccccc}
\hline\hline \noalign{\smallskip} 
Object & $\nu$ & $\Delta{\nu}$\tablefootmark{a} & $\dot{\nu}$ & 
$\Delta{\dot{\nu}}$\tablefootmark{a} &  $\ddot{\nu}_{{\rm obs}}$ & 
$\Delta{\ddot{\nu}_{{\rm obs}}}$\tablefootmark{a} & $\sigma_{{\rm R23}}$ & 
$\ddot{\nu}_{{\rm tno}}$ & $\Delta{\ddot{\nu}_{{\rm tno}}}$ & 
$\ddot{\nu}_{{\rm dip}}$ & $\Delta{\ddot{\nu}_{{\rm dip}}}$ & $n_{{\rm dip}}$& $\Delta{n_{{\rm dip}}}$
 \\
(PSR B) & $({{\rm s}}^{-1})$ & $({{\rm s}}^{-1})$  & 
$(\S)$ & $(\S)$   & $(\ddag)$ & $(\ddag)$ & $({\rm mP})$ &  $(\ddag)$ & $(\ddag)$ & 
$(\ddag)$ & $(\ddag)$   &   & 
 \\
(1)  &  (2)  & (3)  &  (4) &  (5) &  (6)  & (7) & (8) & (9) & (10) & (11) &\\
\hline
0450-18&1.821696158392&\ 6 &\ \ $-$19.091821& 18&\ \ 0.051& 12& 1.3 &\ 0.067 & 0.21 &
0.016 & 0.210 & 8& 105 \\ 
0736-40&2.66723899983\ &\ 7&\ \ $-$11.467300& 16&\ $-$7.674&\ 6& 280.6 & 15.26 &
0.46 & 7.59 & 0.46 & 15386& 900 \\ 
0740-28&5.99657769025\ &\ 6& $-$604.73385&\ 6& $-$35.54&\ 8& 620.9 & 34.04& 0.80 & 
1.50& 0.80 & 2.5  &1.3 \\
0835-41&1.330454723903&\ 9 &\ \ \ \ $-$6.271580 &\ 5&\ \ 0.3795 & 10 & 8.5 &\ 0.444 &
0.026 & 0.0647 & 0.0260 & 219 & 88 \\     
0959-54&0.69609220478\ &\ 6&\ \ $-$24.994522& 12&$-$13.827&\ 4& 260.3 &14.15 &
0.42 & 0.323 & 0.420 & 35 & 39 \\
1054-62&2.36715607565\ &\ 7&\ \ $-$20.01190&\ 4&\ $-$0.326&\ 6& 4.4 &\ 0.23 & 0.16 & 
0.094& 0.160 & 56 & 95 \\
1133+16&0.84181190896\ & 12&\ \ \ \ $-$2.645946 &\ 6&\ \ 0.0652&\ 8& 2.2 &\ 0.114 & 0.016 & 
0.049 & 0.017 & 593 & 196 \\
1221-63&4.619428499992& 10&$-$105.71397 &\ 4&\ $-$0.1410& 10& 4.0 &\ 0.21 &
0.12 & 0.069 & 0.120 & 2.9 & 4.9 \\
1240-64&2.574123963978&\ 5&\ \ $-$29.819964& 12&\ $-$0.744&\ 4& 14.3 &\ 0.647 &
0.057 & 0.097 & 0.058 & 28 & 17 \\
1323-58&2.09208875280\ &\ 6&\ \ $-$14.12989 &\ 6&\ \ 4.402&\ 6& 39.1 &\ 2.082 & 0.090 & 
2.320 & 0.090 & 2430 & 90 \\
1323-62&1.88709280930\ &\ 5&\ \ $-$67.258115& 14&\ $-$1.706&\ 4& 33.1 &\ 1.764&
0.060 & 0.058 &  0.060 & 2.4& 2.5 \\
1356-60&7.84290777286\ &\ 4&$-$389.86801 &\ 7&\ \ 5.06 &\ 7& 85.2&\ 4.58 & 0.14 &
0.48 & 0.15 & 2.5 & 0.8 \\
1358-63&1.186530997525&\ 6&\ \ $-$23.58777 &\ 5&\ \ 8.692&\ 8& 160.2 &\ 8.66 & 0.23 & 
0.027 & 0.23 & 6 & 50 \\
1426-66&1.273169693773&\ 7&\ \ \ \ $-$4.489741 & 12&\ $-$0.190&\ 9& 2.4 &\ 0.126& 0.098 & 
0.064 & 0.099 & 400 & 630 \\
1449-64&5.57148949973\ &\ 5&\ \ $-$85.23778  &\ 6&\ \ 1.592& 10& 29.2 &\ 1.55& 0.16 & 
0.041 & 0.160 &  3 & 10 \\
1451-68&3.796841136660& 12&\ \ \ \ $-$1.424633 & 10&\ $-$0.037&\ 4&0.5 &\ 0.023 &
0.177 & 0.014 & 0.178 &  2619 & 33300 \\
1556-44&3.890198835898&\ 7&\ \ $-$15.42827&\ 5&\ \ 0.212&\ 8& 2.6 &\ 0.137 & 0.088 & 
0.075 & 0.088 &  123 & 144 \\
1557-50&5.192073158034&\ 6& $-$136.46835 &\ 6&\ $-$0.046&\ 7& 2.8 &\ 0.145 &
0.030 & 0.099 & 0.030 & 2.8& 0.8 \\
1641-45&2.197513500235 & 11 &\ \ $-$97.11850 &\ 8 &\ \ 4.1687 &\ 6 & 85.7 &\ 4.60&
0.14 & 3.43 & 0.14 & 80 & 3 \\ 
1642-03&2.57938001879\ &\ 6&\ \ $-$11.85138 &\ 5&\ $-$0.123&\ 6& 8.2 &\ 0.428 & 0.065& 
0.305 & 0.065 & 560 & 120 \\
1706-16&1.531264844912&\ 8&\ \ $-$14.73178 &\ 4&\ \ 6.341&\ 7& 85.8 &\ 4.61 & 0.16 & 
1.73 & 0.16 & 1222 & 110 \\
1727-47&1.205132491642& 18& $-$237.60720 &\ 5&\ \ 3.560&\ 8& 43.5 &\ 2.278 &
0.068 & 1.282 & 0.050 & 2.7 & 0.2 \\
1749-28&1.777590485696& 20&\ \ $-$25.670282 &\ 9&\ $-$0.099&\ 4& 10.7 &\ 0.564 &
0.048 & 0.465 & 0.048 & 125 & 13 \\
1822-09&1.30042174971\ &\ 8&\ $-$88.36158 & 10&14.262 &\ 6 & 258.6 & 14.05 &
0.36 & 0.21 & 0.36 & 3.5 & 5.9 \\
1929+10&4.41466176139\ & 15&\ \ $-$22.542298& 17&\ $-$2.185&\ 7& 12.5 &\ 0.657 &
0.085 & 1.528 & 0.085 & 1327 & 75 \\
1933+16&2.78753800616\ & 14&\ \ $-$46.638826& 14&\ \ 0.145& 10& 3.3 &\ 0.172 &
0.065 & 0.027 & 0.066 & 3.4 & 8.3 \\
2045-16&0.509794578169& 12&\ \ \ \ $-$2.848134&\ 7 &\ \ 0.0086& 12& 0.1 &\ 0.0052 &
0.0350 & 0.0034 & 0.0350  & 21  & 216 \\
\hline
\end{tabular}
\tablefoot{\tablefoottext{a}{ Errors are 2-$\sigma$ formal standard errors and refer
to the last significant digit.   $\S$  In units of 10$^{{\rm -15}}{{\rm s}}^{-2}$.
 $\ddag$  In units of 10$^{{\rm -25}}{{\rm s}}^{-3}$.}}
\end{table}