Table 3: Best-fitting spectral parameters in the 0.3-12 keV energy range. COMPTT: Comptonization of soft photons in a hot plasma (Titarchuk 1994), and DISKLINE: profile line emitted by a relativistic accretion disk around a non-rotating BH (Fabian et al. 1989).
2 COMPTT^a + DISKLINE^b

$kT_{\rm photon1}=15$ eV^d

$kT_{\rm plasma1}= 1.24^{+0.27}_{-0.22}$ keV     $\tau_{_{1}}=6.6^{+0.5}_{-0.8}$

$kT_{\rm photon2}= kT_{\rm plasma1}$ (tied)

$kT_{\rm plasma2}= 100$ keV^d     $\tau_{_{2}}=0.4^{+0.5}_{-0.3}$

$F_{\rm line}^{c}=8.3\pm3.8\times10^{-6}$ erg cm^-2 s^-1     $EW=287\pm130$ eV

$F^{0.3-12~{\rm keV}}_{\rm cont}=8.7^{+2.3}_{-2.0}\times10^{-12}$ erg cm^-2 s^-1

$\chi^{2}/\mbox{d.o.f.}=531.3/524$

$\textstyle \parbox{8.8cm}{$^a$\space The soft photon temperature in the harder ... ...fixed at 6.4~keV in the quasar frame. $^d$\space Frozen parameter (see text).}$

**Table 3:** Best-fitting spectral parameters in the 0.3-12 keV energy range. COMPTT: Comptonization of soft photons in a hot plasma (Titarchuk 1994), and DISKLINE: profile line emitted by a relativistic accretion disk around a non-rotating BH (Fabian et al. 1989).
2 COMPTT^a + DISKLINE^b
$kT_{\rm photon1}=15$ eV^d
$kT_{\rm plasma1}= 1.24^{+0.27}_{-0.22}$ keV $\tau_{_{1}}=6.6^{+0.5}_{-0.8}$
$kT_{\rm photon2}= kT_{\rm plasma1}$ (tied)
$kT_{\rm plasma2}= 100$ keV^d $\tau_{_{2}}=0.4^{+0.5}_{-0.3}$
$F_{\rm line}^{c}=8.3\pm3.8\times10^{-6}$ erg cm^-2 s^-1 $EW=287\pm130$ eV
$F^{0.3-12~{\rm keV}}_{\rm cont}=8.7^{+2.3}_{-2.0}\times10^{-12}$ erg cm^-2 s^-1
$\chi^{2}/\mbox{d.o.f.}=531.3/524$

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