Table 2:  Best-fit parameters of Cygnus X-1 for the current thermal model in the different observation epochs.

Epoch		     Dates Disc Norm.a $kT_{\rm in}$ or $kT_{\rm0}$    $kT_{\rm e}$       $\tau$     $E_{\rm Fe}$line     $\Omega/2\pi^b$      $\chi^2_{\rm red}$
      (MJD)       (keV)  (keV)       (keV)      (d.o.f.)

   1		 52617-52620         - 0.20 (frozen)   $\rm ~67_{-6}^{+8}$ $\rm 1.98_{-0.23}^{+0.21}$        -   $\rm0.25_{-0.04}^{+0.03}$ 1.45 (230)
   2 52797-52801      $\rm 250_{-59}^{+89}$ 1.16 $\pm$ 0.07   $\rm 100_{-17}^{+29}$ $\rm0.98_{-0.28}^{+0.25}$ $\rm 7.07_{-0.11}^{+0.12}$   $\rm0.57_{-0.06}^{+0.09}$ 1.69 (236)
   3 a 52710-52780         - 0.20 (frozen)    $\rm 68_{-12}^{+22}$ $\rm 2.08_{-0.84}^{+0.51}$ 6.48 $\pm$ 0.13   $\rm0.32_{-0.07}^{+0.05}$ 1.07 (190)
   3 b 52801-52825     $\rm 312_{-24}^{+25}$ 1.15 $\pm$ 0.03   93 $\pm~42$ $\rm0.80_{-0.40}^{+0.86}$ 6.40 $\pm$ 0.73   $\rm0.58_{-0.18}^{+0.20}$ 0.93 (190)
   3 c     52990     $\rm 361_{-67}^{+61}$ 0.99 $\pm$ 0.08    $\rm 58_{-15}^{+54}$ $\rm 1.60_{-0.80}^{+0.64}$ 6.96 $\pm$ 0.19   $\rm0.23_{-0.09}^{+0.17}$ 0.99 (190)
   3 d 53101-53165         - 0.20 (frozen)    $\rm 56_{-7}^{+12}$ $\rm 2.28_{-0.41}^{+0.30}$ 6.11 $\pm$ 0.26  0.27 $\pm~$0.06 0.81 (190)
   3 e 53240-53260   132 $\pm$ 10 1.39 $\pm$ 0.77    $\rm 48_{-~6}^{+20}$ $\rm 1.85_{-0.07}^{+0.40}$ 6.49 $\pm$ 0.38   $\rm0.49_{-0.32}^{+0.37}$ 1.56 (190)
   4     53335     $\rm 232_{-32}^{+21}$ 1.16 (frozen)   $\rm 128_{-63}^{+84}$ $\rm0.74_{-0.38}^{+0.88}$ $\rm 7.78_{-0.42}^{+0.44}$   $\rm0.47_{-0.14}^{+0.18}$ 0.97 (221)
Notes:
a Disc normalization K is given by $K~=~(R/D)^{2}~\cos~\theta$where R is the inner disc radius in units of km, D is the distance to the source in units of 10 kpc and $\theta$ the inclination angle of the disc.
b Solid angle of the reflection component.
Model applied in XSPEC notations: CONSTANT* WABS*( DISKBB+ GAUSSIAN+ REFLECT* COMPTT) 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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