Table B.1: Error bars for a representative observation of Cyg X-1, computed using the prescription of Lampton et al. (1976). See text for further explanation.
Parameter value 90% error bar
    with without
    systematics
$kT_{\rm in}$ [keV] 0.855 (-0.02,+0.03) (-0.01,+0.06)
$A_{\rm diskbb}$ 1276 (-175,+203) (-24,+40)
$kT_{\rm e}$ [keV] 108 (-31,+45) (-20,+27)
$\tau $ 0.26 (-0.14,+0.13) (-0.12,+0.15)
$A_{\rm comptt}$ [10-2] 1.86 (-1.0,+1.1) (-0.5,+0.7)
$\Omega /2\pi $ [%] 17.9 (-1.8,+1.3) (-1.1,+1.1)
$\sigma_{\rm Fe K\alpha}$ [keV] 1.01 (-0.05,+0.04) (-0.006,+0.012)
$A_{\rm Fe K \alpha}$ [10-2] 5.34 (-0.4,+0.4) (-0.07,+0.08)
$c_{\rm HEXTE}$ 0.999 (-0.004,+0.005) (-0.003,+0.003)


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