Spectra and best-fit models of COS2949 (Top), COS1656-A (Middle) and COS1638-B (Bottom) integrated over the outflow region (S/N>3 mask of the broad emission). Data and residuals are in black, total model is in dashed red, continuum is in orange, additional Gaussian emission line components are shown as dark to light purple. The gray shaded region marks the wavelength range that was excluded in the fitting process.