Top: our SINFONI spectrum of the PZ Tel companion (black) in spectral resolution 1500 compared to the best-fitting Drift-Phoenix synthetic spectrum (red/gray; same spectral resolution) of T_eff = 2500 K, log g = 3.5 dex, [M/H] = 0.3 dex, and a visual extinction of A_V = 0.53 mag. The spectral range used for χ² minimization is indicated by arrows as well as vertical dashed lines. Magnitude differences with regard to the primary as given in Mugrauer et al. (2010) (blue asterisk) and Biller et al. (2010) (green diamond) were transformed to relative fluxes using the NACO and NICI/NIRI filter transmission curves, respectively. The spectral range of the filters is given as dashed lines, in contrast to negligible spectral error bars. Bottom: absolute value of the residuals of the PZ Tel companion spectrum and the best model fit (black) compared to the determined noise floor (orange/light gray). See text for details. (Color version online.)