Table 3: X-ray continuum spectral properties.

Source		 Thermal component   Partial absorption   Power law $\chi^2$(d.o.f.)
  kT PFa   $N_{\rm H}$ Cvr PFa   $\Gamma $  
  [keV] [%]   $[{\rm 10^{21}~cm^{-2}}]$ [%] [%]      
NGC 1692 $0.79\pm0.08$ $3\times10^{-9}$   $\rm 6_{-4}^{+12}$ 95 $2\times10^{-2}$   $\rm 2.9_{-1.1}^{+0.4}$ 131.6(143)

PKS 0625-35		 $0.64\pm0.19$ $3\times 10^{-3}$   $\rm 1.5_{-1.1}^{+1.8}$ 12 $1\times10^{-2}$   $\rm 2.52_{-0.03}^{+0.02}$ 791.3(762)

3C 88		 $0.64\pm0.02$ $1\times 10^{-15}$   $\rm0.5_{-0.5}^{+6.2}$ 50 $5\times10^{-1}$   $\rm 1.11_{-0.14}^{+0.18}$ 164.6(133)

3C 444		 $1.45\pm0.15$ $7\times 10^{-7}$   $\rm 1.2_{-0.5}^{+0.7}$ 95 $6\times 10^{-5}$   $\rm 1.92_{-0.33}^{+0.27}$ 394.4(377)
a Probability associated with the F statistic (the smaller the value the higher the significance of the spectral component). NGC 1692 requires a second thermal component with $kT=1.44\pm0.15$ ( $P_F=5\times 10^{-9}$). The quoted uncertainties correspond to 90% confidence levels.

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