Table 1: General properties and observation summary of the sample quasars.

Object		 $\alpha$ (1950) $\delta$ (1950)   V   z L5  GHz Integration time (s)  Date FWHM
          (1026 W Hz-1)    R    V    I   (arcsec)

0007+0236		 00 07 45 02 36 57 18.4 0.59 - 2000     Oct. 05 0.85
              2100   Dec. 09 1.31
                1000 Oct. 05 0.89
0010+0146 00 10 01 01 46 45 18.0 0.59 - 2000 $^{\dagger}$     Oct. 06 1.12
0015+1612 00 15 56 16 12 47 18.2 0.554 - 2000     Oct. 04 0.77
0020-0300 00 20 21 -03 00 57 17.3 0.58 - 2000 $^{\dagger}$     Oct. 06 1.13
0021-0100 00 21 38 -01 00 25 18.2 0.77 - 2000 $^{\ddagger}$     Oct. 09 0.97
0058+0205 00 58 59 02 05 47 18.5 0.599 - 2000     Oct. 04 0.78
              2100   Dec. 09 1.45
                2000 $^{\ddagger}$ Oct. 09 0.68
0110+0125 01 10 50 01 25 57 17.8 0.774 - 2000     Oct. 05 1.11
1E 0112+3256 01 13 00 32 56 48 18.9 0.764 - 2000     Dec. 07 2.64
PKS 0130+2412 01 30 39 24 12 19 16.8 0.457 1.29 1900 $^{\dagger}$     Oct. 06 1.17
PHL1072 01 35 12 05 40 12 18.3 0.615 - 2000     Oct. 05 0.86
1E 0136+0606 01 36 20 06 06 50 18.5 0.450 0.21 2500 $^{\ddagger}$     Oct. 11 0.75
                1500 $^{\ddagger}$ Oct. 12 1.08
KUV 0200-0858 02 00 57 -08 58 12 16.5 0.77 - 2000 $^{\ddagger}$     Oct. 09 0.77
MC 0212+1708 02 11 59 17 08 52 18.0 0.472 1.71 2000 $^{\ddagger}$     Oct. 12 1.07
5C 6.189 02 15 45 31 35 39 19.0 0.597 0.60 2000 $^{\ddagger}$     Oct. 11 0.63
EX 0240+0044 02 40 06 00 44 43 16.5 0.569 - 1500$^{\star}$     Oct. 04 0.82
            2000     Dec. 10 1.81
              2400   Dec. 10 2.07
US3150 02 44 18 -01 12 04 16.8 0.467 - 2000$^{\star}$     Oct. 09 0.65
0256+0140 02 56 14 01 40 29 19.0 0.608 - 2000     Oct. 05 0.81
US3605 03 01 48 00 10 53 17.2 0.638 - 2000     Oct. 04 0.78
0305+0222 03 05 38 02 22 56 17.9 0.59 - 1500     Oct. 05 0.90
              2100 $^{\ddagger}$   Oct. 11 0.77
                1800 Dec. 10 1.96
PKS 0353+0247 03 53 22 02 47 43 19.0 0.602 2.60 1000     Oct. 05 0.87
              700 $^{\ddagger}$   Oct. 09 0.77
              2400 $^{\ddagger}$   Oct. 11 0.87
                2400 Dec. 09 1.31
3C 138 05 18 16 16 35 27 18.8 0.759 59.6 2000     Oct. 04 0.67
MC 0657+1740 06 57 37 17 40 08 18.5 0.722 1.67 1600     Oct. 05 0.81
              550 $^{\ddagger}$   Oct. 11 0.88
B2 0709+3701 07 09 47 37 01 14 15.7 0.487 1.14 1400$^{\star}$     Oct. 04 0.74
            2000     Dec. 08 1.38
GC 0742+3321 07 42 46 33 20 54 17.7 0.610 1.03 2000     Dec. 08 1.04
                2400 Dec. 09 1.20
LB 0847+1905 08 47 39 19 05 02 16.6 0.568 - 2000     Dec. 08 1.71
0929+5319 09 29 13 53 19 53 19.0 0.595 3.24 2100     Dec. 10 1.04
MC 1157+1150 11 57 12 11 50 31 19.0 0.731 0.87 900     June 13 0.87
            1500     June 14 0.60
1240+1551 12 40 30 15 51 37 18.8 0.573 - 500     June 14 0.56
            1000     June 15 0.75
3C 275.1 12 41 27 16 39 18 19.0 0.555 7.04 2000     June 09 0.88
              3500   June 10 0.69
                2400 June 16 0.57
1242+1719 12 42 52 17 19 32 18.6 0.54 - 2000     June 11 1.04
CSO179 12 50 53 31 22 07 16.7 0.78 - 2200     June 15 0.59
AB122 13 03 22 33 51 34 18.1 0.49 - 3000     June 17 0.53
W23694 13 06 07 30 21 39 17.2 0.806 - 2000     June 12 0.78
E 1332+3730 13 32 00 37 30 55 18.2 0.438 - 1500     June 12 0.86
              1700   June 14 0.54
                2200 June 16 0.56

TEX 1423+1438		 14 23 25 14 38 26 19.0 0.78 12.7 2000     June 13 1.21
              2400   June 17 0.61
                2400 June 16 0.49
1435+0130 14 35 24 01 30 52 18.3 0.633 - 2000     June 11 1.03
PG 1443+1015 14 43 54 10 15 44 19.7 0.732 - 2000     June 10 0.73
1446+0218 14 46 05 02 18 55 17.9 0.672 - 2000     June 13 1.02
PKS 1451+0946 14 51 27 09 46 34 18.5 0.632 3.12 2000     June 11 0.96
B2 1512+3701 15 12 46 37 01 55 15.5 0.37 1.10 2000     June 17 0.71
              1000   June 17 0.68
              1400   June 18 0.67
PKS 1530+1342 15 30 54 13 42 28 19.0 0.711 5.34 2400     June 14 0.52
PG 1538+4745 15 38 00 47 45 15 16.0 0.772 0.62 2000     June 09 0.89
PG 1543+4855 15 43 59 48 55 30 16.1 0.40 - 2000     June 15 0.60
              3000   June 15 0.55
                2400 June 16 0.47
MC 1548+1129 15 48 21 11 29 47 17.2 0.436 1.99 1500     June 10 0.87
MC 1608+1123 16 08 11 11 23 16 18.0 0.457 0.62 2000     June 12 0.83
1631+3757 16 31 19 37 57 19 19.2 0.638 - 2000     June 11 0.89
OS 562 16 37 17 57 26 16 17.0 0.751 25.5 2000     June 09 0.89
1637+3910 16 37 35 39 10 48 17.8 0.461 - 2000     June 11 0.82
MS 1640+3940 16 40 06 39 40 42 18.3 0.540 0.35 2000     June 12 0.92
1640.5 16 40 29 39 44 13 18.0 0.625 - 2000     June 13 0.99
            500     June 15 0.52
1641.7 16 41 45 39 58 46 16.8 0.705 - 2000     June 10 0.73
                2400 June 16 0.53
1641+3959 16 41 53 39 59 18 19.3 0.593 - 2000     June 12 1.10
              3000   June 14 0.60
B2 1657+2634 16 57 22 26 34 03 18.0 0.795 8.84 2000     June 10 0.72
4C 45.34 17 05 50 45 40 02 17.6 0.648 4.72 2200     June 09 0.97
            1000     June 17 0.50
                1000 June 17 0.50
B2 1724+3959 17 24 54 39 59 32 18. 0.66 3.26 2000     June 13 0.91
B2 1752+3528 17 52 04 35 28 29 17.5 0.55 0.36 2000     June 12 1.09
            2000     June 14 0.61
              3000   June 15 0.55
                2400 June 16 0.47
OU 401 18 00 03 44 04 18 17.5 0.663 12.2 1000     June 09 0.92
PKS 1819+2249 18 19 07 22 49 46 18. 0.628 3.13 2000     June 12 0.79
4C 40.37 18 19 13 40 50 12 18. 0.733 2.87 1500     Oct. 05 1.07
4C 56.27 18 23 15 56 49 18 18.4 0.664 12.3 2000     June 13 0.87
              1400   June 18 0.74
                2000 June 18 0.61
3C 380 18 28 13 48 42 40 16.8 0.692 57.2 2000     June 11 1.01
            1500     June 16 0.53
              2800   June 11 1.08
                2500 June 13 0.79
1951+4950 19 51 12 49 50 24 17.5 0.466 1.06 2000     June 10 0.77
              2800   June 17 0.59
                1200 June 16 0.50
                1000 June 17 0.56
MS 2037-0035 20 37 21 -00 35 20 18.4 0.609 0.20 2000     June 12 0.73
PG 2112+0555 21 12 23 05 55 12 15.5 0.466 - 2000     June 09 0.93
2112+0556 21 12 49 05 56 02 18.9 0.398 - 2000     Oct. 05 0.95
2113+0536 21 13 39 05 36 05 18.9 0.509 - 2400 $^{\ddagger}$     June 14 0.72
2141+0402 21 41 52 04 02 38 17.1 0.463 - 1500     June 09 1.06
            1200     June 14 0.74
MC 2142+1101 21 42 52 11 01 36 17.6 0.550 2.58 2000     June 13 0.99
              1200   June 13 0.99
                2000 June 15 0.52
MG2149 21 47 06 07 42 24 18.5 0.52 2.70 1500     June 10 0.86
PKS 2209+0804 22 09 32 08 04 25 18.5 0.484 4.16 1500     June 10 0.76
            1500     Oct. 04 0.72
              2800 $^{\ddagger}$   Oct. 09 0.89
                2000 $^{\ddagger}$ Oct. 09 0.68
2217+0845 22 17 42 08 45 24 18.6 0.623 1.12 1500     June 11 1.06
            1500     Oct. 04 0.70
              2100   June 17 0.60
                1500 June 16 0.48
                1500 Oct. 04 0.70
2232+1316 22 32 06 13 16 30 20.0 0.760 - 2000     Dec. 09 1.15
2235+0054 22 35 00 00 54 58 18.5 0.529 - 1500     June 15 0.74
2238+0133 22 38 19 01 33 45 18.1 0.714 - 2000     Oct. 04 0.74
            2000     Dec. 10 2.39
PKS 2247+1315 22 47 16 13 15 16 18. 0.767 9.82 2000     Oct. 04 0.69
            500     Oct. 05 0.75
                2000 Oct. 05 0.74
4C 09.72 23 08 46 09 51 57 16.0 0.433 1.06 2200$^{\star}$     Oct. 05 0.89
2350-0236 23 50 18 -02 36 58 17.5 0.46 - 1000 $^{\dagger}$     Oct. 09 0.88
PKS 2351-0036 23 51 35 -00 36 30 18.5 0.46 1.84 1500 $^{\dagger}$     Oct. 12 0.73
ZC 2354+002 23 54 55 00 12 58 17.0 0.41 - 1500     Oct. 04 0.84
$^{\dagger}$
Object observed during non-photometric conditions.
$^{\ddagger}$
Object observed during non-photometric conditions, but calibrated with data obtained in December 1998.
$^{\star}$
Quasar saturated.

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