Table 1: Results of the second- and third-order polynomial fits to the 27 HartRAO pulsars.
Object $\sigma_{{\rm R}}(2,T)$ $\sigma_{{\rm R}} (3,T)$ $\sigma _{{\rm R23}}$ $\chi_{23}^{{\rm 2}}$ T $\ddot{\nu}_{{\rm obs}}$ $ERR^{{\rm a}}$ $\ddot{\nu}_{{\rm pre}}$ $n_{{\rm obs}}$ A

PSR B (mP) (mP) (mP) $({\rm Days})$ $10^{{\rm -25}}~{\rm Hz~s}^{{\rm -2}}$ $10^{{\rm -25}}~{\rm Hz~s}^{{\rm -2}}$

(1) (2) (3) (4) (5) (6) (7) (8) (9) (10) (11)

0450-18 5.9 5.7 0.2 0.8 4960 +0.013 4 0.0060 6.5 -1.48

0736-40 185.4 22.3 163.1 69.7 4880 -8.389 6 0.0015 +16983.1 -0.01

0740-28 740.5 362.5 378.0 7.2 4930 -39.334 5 1.8298 -64.5 +0.38

0835-41 7.7 1.5 6.2 26.2 4930 +0.366 9 0.0009 +1238.6 -1.02

0959-54 270.9 56.2 214.7 22.6 4870 -13.850 3 0.0271 -1535.5 +0.78

1054-62 8.8 8.3 0.5 1.4 4950 -0.303 8 0.0051 -179.1 -1.26

1133+16 1.4 0.4 1.0 22.6 5220 +0.062 4 0.0002 +745.5 -1.64

1221-63 6.6 6.0 0.6 1.1 4950 -0.096 8 0.0726 -4.0 -1.71

1240-64 14.2 9.4 4.8 3.1 4950 -0.774 3 0.0104 -224.0 -1.05

1323-58 79.0 63.2 15.8 1.5 4640 +2.472 4 0.0029 +2592.1 -0.18

1323-62 48.7 30.8 17.9 1.7 4950 -1.554 3 0.0719 -64.8 -0.38

1356-60 97.3 22.4 74.9 14.7 4660 +5.048 14 0.5814 +26.0 -0.64

1358-63 168.2 89.1 79.1 2.4 4360 +8.553 6 0.0140 +1827.0 +0.40

1426-66 5.6 4.8 0.8 1.6 4910 -0.197 3 0.0005 -1244.0 -1.17

1449-64 28.6 7.4 21.2 13.4 4590 +1.561 10 0.0391 +119.7 -1.09

1451-68 4.5 4.4 0.1 1.4 4950 -0.029 2 <0.0001 -5612.5 -2.02

1556-44 5.5 4.8 0.7 1.7 4920 +0.217 6 0.0018 +354.7 -1.71

1557-50 17.7 17.1 0.6 1.0 4950 -0.751 7 0.1076 -2.1 -1.29

1641-45 147.8 102.6 45.2 1.8 4810 +4.169 5 0.1288 +97.1 +0.04

1642-03 40.5 39.3 1.2 1.0 4900 -0.299 4 0.0016 -549.1 -0.57

1706-16 78.8 18.2 60.6 20.4 4360 +6.394 9 0.0043 +4497.5 0.00

1727-47 17.0 5.6 11.4 16.8 3000 +2.403 3 1.4056 +5.1 -0.34

1749-28 42.3 39.5 2.8 1.0 4960 -0.223 2 0.0111 -60.2 -0.45

1822-09 68.9 16.6 52.3 17.8 3590 +7.364 12 0.1809 +122.1 +0.14

1929+10 24.0 23.2 0.8 1.5 3840 -1.584 7 0.0035 -1376.2 -0.86

1933+16 2.7 1.9 0.8 2.4 4940 +0.120 2 0.0234 +15.4 -1.86

2045-16 0.8 0.7 0.1 1.1 4960 +0.005 9 0.0005 +33.9 -1.72

**Table 1:** Results of the second- and third-order polynomial fits to the 27 HartRAO pulsars.
Object	$\sigma_{{\rm R}}(2,T)$	$\sigma_{{\rm R}} (3,T)$	$\sigma _{{\rm R23}}$	$\chi_{23}^{{\rm 2}}$	T	$\ddot{\nu}_{{\rm obs}}$	$ERR^{{\rm a}}$	$\ddot{\nu}_{{\rm pre}}$	$n_{{\rm obs}}$	A
PSR B	(mP)	(mP)	(mP)		$({\rm Days})$	$10^{{\rm -25}}~{\rm Hz~s}^{{\rm -2}}$		$10^{{\rm -25}}~{\rm Hz~s}^{{\rm -2}}$
(1)	(2)	(3)	(4)	(5)	(6)	(7)	(8)	(9)	(10)	(11)
0450-18	5.9	5.7	0.2	0.8	4960	+0.013	4	0.0060	6.5	-1.48
0736-40	185.4	22.3	163.1	69.7	4880	-8.389	6	0.0015	+16983.1	-0.01
0740-28	740.5	362.5	378.0	7.2	4930	-39.334	5	1.8298	-64.5	+0.38
0835-41	7.7	1.5	6.2	26.2	4930	+0.366	9	0.0009	+1238.6	-1.02
0959-54	270.9	56.2	214.7	22.6	4870	-13.850	3	0.0271	-1535.5	+0.78
1054-62	8.8	8.3	0.5	1.4	4950	-0.303	8	0.0051	-179.1	-1.26
1133+16	1.4	0.4	1.0	22.6	5220	+0.062	4	0.0002	+745.5	-1.64
1221-63	6.6	6.0	0.6	1.1	4950	-0.096	8	0.0726	-4.0	-1.71
1240-64	14.2	9.4	4.8	3.1	4950	-0.774	3	0.0104	-224.0	-1.05
1323-58	79.0	63.2	15.8	1.5	4640	+2.472	4	0.0029	+2592.1	-0.18
1323-62	48.7	30.8	17.9	1.7	4950	-1.554	3	0.0719	-64.8	-0.38
1356-60	97.3	22.4	74.9	14.7	4660	+5.048	14	0.5814	+26.0	-0.64
1358-63	168.2	89.1	79.1	2.4	4360	+8.553	6	0.0140	+1827.0	+0.40
1426-66	5.6	4.8	0.8	1.6	4910	-0.197	3	0.0005	-1244.0	-1.17
1449-64	28.6	7.4	21.2	13.4	4590	+1.561	10	0.0391	+119.7	-1.09
1451-68	4.5	4.4	0.1	1.4	4950	-0.029	2	<0.0001	-5612.5	-2.02
1556-44	5.5	4.8	0.7	1.7	4920	+0.217	6	0.0018	+354.7	-1.71
1557-50	17.7	17.1	0.6	1.0	4950	-0.751	7	0.1076	-2.1	-1.29
1641-45	147.8	102.6	45.2	1.8	4810	+4.169	5	0.1288	+97.1	+0.04
1642-03	40.5	39.3	1.2	1.0	4900	-0.299	4	0.0016	-549.1	-0.57
1706-16	78.8	18.2	60.6	20.4	4360	+6.394	9	0.0043	+4497.5	0.00
1727-47	17.0	5.6	11.4	16.8	3000	+2.403	3	1.4056	+5.1	-0.34
1749-28	42.3	39.5	2.8	1.0	4960	-0.223	2	0.0111	-60.2	-0.45
1822-09	68.9	16.6	52.3	17.8	3590	+7.364	12	0.1809	+122.1	+0.14
1929+10	24.0	23.2	0.8	1.5	3840	-1.584	7	0.0035	-1376.2	-0.86
1933+16	2.7	1.9	0.8	2.4	4940	+0.120	2	0.0234	+15.4	-1.86
2045-16	0.8	0.7	0.1	1.1	4960	+0.005	9	0.0005	+33.9	-1.72

$^{{\rm a}}$ Errors are 2 $\sigma$ formal standard errors and refer to the last significant digit.

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