Table 3:  Best-fit parameters of Cygnus X-1 for thermal/non-thermal hybrid models in the epoch 2 observations.
Model eqpair (thermal) eqpair (non-thermal) compps (thermal) compps (non-thermal)
   $l_{\rm h}/l_{\rm s}$       $\rm 5.3_{-0.4}^{+0.8}$         $\rm 4.57_{-0.87}^{+0.04}$           -           -
  $l_{\rm nth}/l_{\rm h}$           -         $\rm0.16_{-0.08}^{+0.11}$           -           -
    $\tau$      $\rm0.66_{-0.09}^{+0.02}$         $\rm0.49_{-0.02}^{+0.24}$      $\rm0.57_{-0.01}^{+0.03}$    1.43 $\pm$ 0.10
     $\Gamma_{\rm p}$           -         $\rm 2.4_{-1.0}^{+0.5}$           -     $\rm 3.72_{-0.22}^{+0.17}$
$\gamma_{\rm min}$, $\gamma_{\rm max}$           -  1.5, 1000 (frozen)           -  1.34, 1000 (frozen)
   $\Omega/2\pi$      $\rm0.73_{-0.03}^{+0.07}$      0.63 $\pm$ 0.08    0.60 $\pm$ 0.05     $\rm0.87_{-0.28}^{+0.12}$
$E_{\rm Fe}$ (keV)      $7\rm .18_{-0.14}^{+0.16}$       7.06 $\pm~0.06$     $\rm 7.20_{-0.22}^{+0.10}$    7.14 $\pm$ 0.09
EW (eV)         287           379         238         412
$kT_{\rm0}$ (keV)      $\rm 1.44_{-0.03}^{+0.07}$         $\rm 1.39_{-0.01}^{+0.27}$    1.20 (frozen)    1.20 (frozen)
$kT_{\rm e}$ (keV)         103a            42a         $\rm 111_{-6}^{+3}$         $\rm 39_{-2}^{+33}$
$\chi^2_{\rm red}$ (d.o.f.)     1.68 (234)        1.55 (232)      1.72 (233)      1.69 (230)
Notes:
a The electron temperature is calculated for the best-fit model (i.e., not free parameters).
Model applied in XSPEC notations: CONSTANT* WABS*( DISKPN+ GAUSSIAN+ EQPAIR) or CONSTANT* WABS*( DISKBB+ GAUSSIAN+ COMPPS) with $N_{\rm H}$ fixed to 6 $\times$ 1021 cm-2 and $kT_{\rm0}$ value tied to disc $kT_{\rm in}$. Errors are at 90$\%$ confidence level ($\Delta$$\chi^2$ = 2.7).

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