Table 1: Log of the observations. The observations for 3C 196 were obtained in non-photometric conditions and all derived fluxes are relative.
Name Alias Redshift Date Instrument Exposure time (s) Seeing (arcsec)
OI 363 Q0738+313 0.63 2003-04-27 PMAS 2 $\times$ 1800 0.8
      2003-04-30 PMAS 2 $\times$ 1800 1.2
      2004-01-16 INTEGRAL 4 $\times$ 1800 1.0-1.2
3C 196 Q0809+4822 0.871 2004-01-16 INTEGRAL 8 $\times$ 1800 1.0-1.5
3C 336 Q1622+236 0.927 2003-04-27 PMAS 6 $\times$ 1800 1.0

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